Merge pull request #1969 from umbraco/temp-U4-9974

U4-9974 EnablePropertyValueConverter does the opposite
Bumps version
2017-06-01 13:32:51 +02:00 · 2017-06-01 13:04:31 +02:00 · 2017-06-01 13:03:56 +02:00 · 2017-06-01 10:57:15 +02:00 · 2017-05-31 16:36:42 +02:00 · 2017-05-31 16:29:26 +02:00
393 changed files with 6591 additions and 7658 deletions
@@ -0,0 +1,10 @@
+root=true
+
+[*]
+end_of_line = lf
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.{cs,cshtml,csx,vb,vbx,vbhtml,fs,fsx,txt,ps1,sql}]
+indent_size = 4
@@ -142,4 +142,6 @@ build/ui-docs.zip
 build/csharp-docs.zip
 build/msbuild.log
 .vs/
-src/packages/
+src/packages/
+build/tools/
+src/PrecompiledWeb/*
@@ -1,3 +1,5 @@
+[![Build status](https://ci.appveyor.com/api/projects/status/ikpgqxiw9v8opltv/branch/dev-v7?svg=true)](https://ci.appveyor.com/project/Umbraco/umbraco-cms-hs8dx/branch/dev-v7)
+
 Umbraco CMS
 ===========
 The friendliest, most flexible and fastest growing ASP.NET CMS used by more than 390,000 websites worldwide: [https://umbraco.com](https://umbraco.com)
@@ -113,18 +113,61 @@ REM This is necessary because SETLOCAL is on in InstallGit.cmd so that one might
 REM but the path setting is lost due to SETLOCAL 
 SET PATH="C:\Program Files (x86)\Git\cmd";"C:\Program Files\Git\cmd";%PATH%

+SET toolsFolder=%CD%\tools\
+IF NOT EXIST "%toolsFolder%" (
+	MD tools
+)
+
+SET nuGetExecutable=%CD%\tools\nuget.exe
+IF NOT EXIST "%nuGetExecutable%" (
+	ECHO Getting NuGet so we can fetch some tools
+	ECHO Downloading https://dist.nuget.org/win-x86-commandline/latest/nuget.exe to %nuGetExecutable%
+	powershell -Command "(New-Object Net.WebClient).DownloadFile('https://dist.nuget.org/win-x86-commandline/latest/nuget.exe', '%nuGetExecutable%')"
+)
+
+:: We need 7za.exe for BuildBelle.bat
+IF NOT EXIST "%toolsFolder%7za.exe" (
+	ECHO 7zip not found - fetching now
+	"%nuGetExecutable%" install 7-Zip.CommandLine -OutputDirectory tools -Verbosity quiet
+)
+
+:: We need vswhere.exe for VS2017+
+IF NOT EXIST "%toolsFolder%vswhere.exe" (
+	ECHO vswhere not found - fetching now
+	"%nuGetExecutable%" install vswhere -OutputDirectory tools -Verbosity quiet
+)
+
+:: Put 7za.exe and vswhere.exe in a predictable path (not version specific)
+FOR /f "delims=" %%A in ('dir "%toolsFolder%7-Zip.CommandLine.*" /b') DO SET "sevenZipExePath=%toolsFolder%%%A\"
+MOVE "%sevenZipExePath%tools\7za.exe" "%toolsFolder%7za.exe"
+
+FOR /f "delims=" %%A in ('dir "%toolsFolder%vswhere.*" /b') DO SET "vswhereExePath=%toolsFolder%%%A\"
+MOVE "%vswhereExePath%tools\vswhere.exe" "%toolsFolder%vswhere.exe"
+
 ECHO.
 ECHO Making sure we have a web.config
 IF NOT EXIST "%CD%\..\src\Umbraco.Web.UI\web.config" COPY "%CD%\..\src\Umbraco.Web.UI\web.Template.config" "%CD%\..\src\Umbraco.Web.UI\web.config"

+for /f "usebackq tokens=1* delims=: " %%i in (`"%CD%\tools\vswhere.exe" -latest -requires Microsoft.Component.MSBuild`) do (
+  if /i "%%i"=="installationPath" set InstallDir=%%j
+)
+
+SET VSWherePath="%InstallDir%\MSBuild"
+
+ECHO.
+ECHO Visual Studio is installed in: %InstallDir%
+
+SET MSBUILDPATH=C:\Program Files (x86)\MSBuild\14.0\Bin
+SET MSBUILD="%MSBUILDPATH%\MsBuild.exe"
+
 ECHO.
 ECHO Reporting NuGet version
-"%CD%\..\src\.nuget\NuGet.exe" help | findstr "^NuGet Version:"
+"%nuGetExecutable%" help | findstr "^NuGet Version:"

 ECHO.
 ECHO Restoring NuGet packages
 ECHO Into %nuGetFolder%
-"%CD%\..\src\.nuget\NuGet.exe" restore "%CD%\..\src\umbraco.sln" -Verbosity Quiet -NonInteractive -PackagesDirectory "%nuGetFolder%"
+"%nuGetExecutable%" restore "%CD%\..\src\umbraco.sln" -Verbosity Quiet -NonInteractive -PackagesDirectory "%nuGetFolder%"
 IF ERRORLEVEL 1 GOTO :error

 ECHO.
@@ -134,7 +177,7 @@ ECHO This takes a few minutes and logging is set to report warnings
 ECHO and errors only so it might seems like nothing is happening for a while. 
 ECHO You can check the msbuild.log file for progress.
 ECHO.
-%MSBUILD% "Build.proj" /p:BUILD_RELEASE=%RELEASE% /p:BUILD_COMMENT=%COMMENT% /p:NugetPackagesDirectory="%nuGetFolder%" /consoleloggerparameters:Summary;ErrorsOnly /fileLogger
+%MSBUILD% "Build.proj" /p:BUILD_RELEASE=%RELEASE% /p:BUILD_COMMENT=%COMMENT% /p:NugetPackagesDirectory="%nuGetFolder%" /p:VSWherePath=%VSWherePath% /consoleloggerparameters:Summary;ErrorsOnly /fileLogger
 IF ERRORLEVEL 1 GOTO error

 ECHO.
@@ -1,33 +1,59 @@
@ECHO OFF
 SETLOCAL
+	:: SETLOCAL is on, so changes to the path not persist to the actual user's path

-SET release=%1
-ECHO Installing Npm NuGet Package
-
-SET nuGetFolder=%CD%\..\src\packages\
-ECHO Configured packages folder: %nuGetFolder%
+SET toolsFolder=%CD%\tools\
 ECHO Current folder: %CD%

-%CD%\..\src\.nuget\NuGet.exe install Npm.js -OutputDirectory %nuGetFolder%  -Verbosity quiet
+SET nodeFileName=node-v6.9.1-win-x86.7z
+SET nodeExtractFolder=%toolsFolder%node.js.691

-for /f "delims=" %%A in ('dir %nuGetFolder%node.js.* /b') do set "nodePath=%nuGetFolder%%%A\"
-for /f "delims=" %%A in ('dir %nuGetFolder%npm.js.* /b') do set "npmPath=%nuGetFolder%%%A\tools\"
+IF NOT EXIST "%nodeExtractFolder%" (
+	ECHO Downloading http://nodejs.org/dist/v6.9.1/%nodeFileName% to %toolsFolder%%nodeFileName%
+	powershell -Command "(New-Object Net.WebClient).DownloadFile('http://nodejs.org/dist/v6.9.1/%nodeFileName%', '%toolsFolder%%nodeFileName%')"
+	ECHO Extracting %nodeFileName% to %nodeExtractFolder%
+	"%toolsFolder%\7za.exe" x "%toolsFolder%\%nodeFileName%" -o"%nodeExtractFolder%" -aos > nul
+)
+FOR /f "delims=" %%A in ('dir "%nodeExtractFolder%\node*" /b') DO SET "nodePath=%nodeExtractFolder%\%%A"

-ECHO Adding Npm and Node to path 
-REM SETLOCAL is on, so changes to the path not persist to the actual user's path
-PATH=%npmPath%;%nodePath%;%PATH%

-SET buildFolder=%CD%
+SET nuGetExecutable=%CD%\tools\nuget.exe
+IF NOT EXIST "%nuGetExecutable%" (
+	ECHO Downloading https://dist.nuget.org/win-x86-commandline/latest/nuget.exe to %nuGetExecutable%
+	powershell -Command "(New-Object Net.WebClient).DownloadFile('https://dist.nuget.org/win-x86-commandline/latest/nuget.exe', '%nuGetExecutable%')"
+)

-ECHO Change directory to %CD%\..\src\Umbraco.Web.UI.Client\
-CD %CD%\..\src\Umbraco.Web.UI.Client\
+SET drive=%CD:~0,2%
+SET nuGetFolder=%drive%\packages\
+FOR /f "delims=" %%A in ('dir "%nuGetFolder%npm.*" /b') DO SET "npmPath=%nuGetFolder%%%A\"

-ECHO Do npm install and the grunt build of Belle
-call npm cache clean --quiet
-call npm install --quiet
-call npm install -g grunt-cli --quiet
-call npm install -g bower --quiet
-call grunt build --buildversion=%release%
+IF [%npmPath%] == [] GOTO :installnpm 
+IF NOT [%npmPath%] == [] GOTO :build

-ECHO Move back to the build folder
-CD %buildFolder% 
+:installnpm
+	ECHO Downloading npm
+	ECHO Configured packages folder: %nuGetFolder%	
+	ECHO Installing Npm NuGet Package
+	"%nuGetExecutable%" install Npm -OutputDirectory %nuGetFolder% -Verbosity detailed
+	REM Ensures that we look for the just downloaded NPM, not whatever the user has installed on their machine
+	FOR /f "delims=" %%A in ('dir %nuGetFolder%npm.* /b') DO SET "npmPath=%nuGetFolder%%%A\"
+	GOTO :build
+
+:build
+    ECHO Adding Npm and Node to path 
+    REM SETLOCAL is on, so changes to the path not persist to the actual user's path
+    PATH="%npmPath%";"%nodePath%";%PATH%
+    SET buildFolder=%CD%
+
+    ECHO Change directory to %CD%\..\src\Umbraco.Web.UI.Client\
+    CD %CD%\..\src\Umbraco.Web.UI.Client\
+
+    ECHO Do npm install and the grunt build of Belle
+    call npm cache clean --quiet
+    call npm install --quiet
+    call npm install -g grunt-cli --quiet
+    call npm install -g bower --quiet
+    call grunt build --buildversion=%release%
+
+    ECHO Move back to the build folder
+    CD "%buildFolder%"
@@ -57,6 +57,20 @@ $IndexPath = "../src/umbraco.web.ui.client/docs/api/index.html"

 # Build the solution in debug mode
 $SolutionPath = Join-Path -Path $SolutionRoot -ChildPath "umbraco.sln"
+
+# Go get nuget.exe if we don't hae it
+$NuGet = "$ToolsRoot\nuget.exe"
+$FileExists = Test-Path $NuGet
+If ($FileExists -eq $False) {
+	Write-Host "Retrieving nuget.exe..."
+	$SourceNugetExe = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"
+	Invoke-WebRequest $SourceNugetExe -OutFile $NuGet
+}
+
+#restore nuget packages
+Write-Host "Restoring nuget packages..."
+& $NuGet restore $SolutionPath
+
 & $MSBuild "$SolutionPath" /p:Configuration=Debug /maxcpucount /t:Clean
 if (-not $?)
 {
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
-  <metadata>
+  <metadata minClientVersion="3.4.4">
    <id>UmbracoCms.Core</id>
    <version>7.0.0</version>
    <title>Umbraco Cms Core Binaries</title>
@@ -14,12 +14,13 @@
    <summary>Contains the core assemblies needed to run Umbraco Cms</summary>
    <language>en-US</language>
    <tags>umbraco</tags>
-    <dependencies>
-      <!--Must be this way because 2.0.5 is actually 1.2.15.0 and 2.0.6 is actually 2.0.6 !-->
-      <dependency id="log4net" version="[2.0.5,2.0.6)" />
+    <dependencies>      
+      <dependency id="log4net" version="[2.0.8,3.0.0)" />
+      <dependency id="Log4Net.Async" version="[2.0.4,3.0.0)" />
      <dependency id="Microsoft.AspNet.Mvc" version="[5.2.3,6.0.0)" />
      <dependency id="Microsoft.AspNet.WebApi" version="[5.2.3,6.0.0)" />
      <dependency id="Microsoft.AspNet.Identity.Owin" version="[2.2.1, 3.0.0)" />
+      <dependency id="Microsoft.AspNet.SignalR.Core" version="[2.2.1, 3.0.0)" />
      <dependency id="Microsoft.Owin.Security.Cookies" version="[3.0.1, 4.0.0)" />
      <dependency id="Microsoft.Owin.Security.OAuth" version="[3.0.1, 4.0.0)" />
      <dependency id="Microsoft.Owin.Host.SystemWeb" version="[3.0.1, 4.0.0)" />
@@ -27,19 +28,19 @@
      <dependency id="HtmlAgilityPack" version="[1.4.9.5, 2.0.0)" />
      <dependency id="Lucene.Net" version="[2.9.4.1, 3.0.0.0)" />
      <dependency id="SharpZipLib" version="[0.86.0, 1.0.0)" />
-      <dependency id="MySql.Data" version="[6.9.8, 7.0.0)" />
+      <dependency id="MySql.Data" version="[6.9.9, 7.0.0)" />
      <dependency id="xmlrpcnet" version="[2.5.0, 3.0.0)" />
      <dependency id="ClientDependency" version="[1.9.2, 2.0.0)" />
      <dependency id="ClientDependency-Mvc5" version="[1.8.0.0, 2.0.0)" />
      <dependency id="AutoMapper" version="[3.3.1, 4.0.0)" />
-      <dependency id="Newtonsoft.Json" version="[9.0.1, 10.0.0)" />
+      <dependency id="Newtonsoft.Json" version="[10.0.2, 11.0.0)" />
      <dependency id="Examine" version="[0.1.82, 1.0.0)" />
-      <dependency id="ImageProcessor" version="[2.5.2, 3.0.0)" />
-      <dependency id="ImageProcessor.Web" version="[4.8.2, 5.0.0)" />
-      <dependency id="semver" version="[2.0.4, 3.0.0)" />
-	  <!-- Markdown can not be updated due to: https://github.com/hey-red/markdownsharp/issues/71#issuecomment-233585487 -->
+      <dependency id="ImageProcessor" version="[2.5.3, 3.0.0)" />
+      <dependency id="ImageProcessor.Web" version="[4.8.3, 5.0.0)" />
+      <dependency id="semver" version="[1.1.2, 3.0.0)" />
+	    <!-- Markdown can not be updated due to: https://github.com/hey-red/markdownsharp/issues/71#issuecomment-233585487 -->
      <dependency id="Markdown" version="[1.14.7, 2.0.0)" />
-      <dependency id="System.Threading.Tasks.Dataflow" version="[4.6.0, 5.0.0)" />
+      <dependency id="System.Threading.Tasks.Dataflow" version="[4.7.0, 5.0.0)" />
    </dependencies>
  </metadata>
  <files>
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
-  <metadata minClientVersion="2.8">
+  <metadata minClientVersion="3.4.4">
    <id>UmbracoCms</id>
    <version>7.0.0</version>
    <title>Umbraco Cms</title>
@@ -16,10 +16,10 @@
    <tags>umbraco</tags>
    <dependencies>
      <dependency id="UmbracoCms.Core" version="[$version$]" />
-      <dependency id="Newtonsoft.Json" version="[9.0.1, 10.0.0)" />
-      <dependency id="Umbraco.ModelsBuilder" version="[3.0.5, 4.0.0)" />
+      <dependency id="Newtonsoft.Json" version="[10.0.2, 11.0.0)" />
+      <dependency id="Umbraco.ModelsBuilder" version="[3.0.7, 4.0.0)" />
      <dependency id="Microsoft.AspNet.SignalR.Core" version="[2.2.1, 3.0.0)" />
-	  <dependency id="ImageProcessor.Web.Config" version="[2.3.0, 3.0.0)" />
+	    <dependency id="ImageProcessor.Web.Config" version="[2.3.0, 3.0.0)" />
    </dependencies>
  </metadata>
  <files>
@@ -8,8 +8,16 @@
                                                   
 ----------------------------------------------------

-Don't forget to build!
+*** IMPORTANT NOTICE FOR 7.6 UPGRADES ***

+Be sure to read the version specific upgrade information before proceeding:
+https://our.umbraco.org/documentation/Getting-Started/Setup/Upgrading/version-specific#version-7-6-0
+
+You will most likely need to make some changes to your web.config and you will need to be 
+aware of the breaking changes listed there to see if these affect your installation.
+
+
+Don't forget to build!

 We've done our best to transform your configuration files but in case something is not quite right: remember we
 backed up your files in App_Data\NuGetBackup so you can find the original files before they were transformed.
@@ -330,6 +330,9 @@
      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='Microsoft.Owin.Security')" xdt:Transform="Remove" />
      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='Microsoft.Owin.Security.Cookies')" xdt:Transform="Remove" />
      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='System.Net.Http.Formatting')" xdt:Transform="Remove" />
+      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='Microsoft.CodeAnalysis.CSharp')" xdt:Transform="Remove" />
+      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='log4net')" xdt:Transform="Remove" />
+      <dependentAssembly xdt:Locator="Condition(./_defaultNamespace:assemblyIdentity/@name='System.Data.SqlServerCe')" xdt:Transform="Remove" />
    </assemblyBinding>
  </runtime>

@@ -349,7 +352,7 @@
      </dependentAssembly>
      <dependentAssembly xdt:Transform="Insert">
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.0" newVersion="10.0.0.0" />
      </dependentAssembly>
      <dependentAssembly xdt:Transform="Insert">
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" culture="neutral" />
@@ -383,6 +386,14 @@
        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
+      <dependentAssembly xdt:Transform="Insert">
+        <assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-2.0.8.0" newVersion="2.0.8.0"/>
+      </dependentAssembly>
+      <dependentAssembly xdt:Transform="Insert">
+        <assemblyIdentity name="System.Data.SqlServerCe" publicKeyToken="89845DCD8080CC91" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-4.0.0.1" newVersion="4.0.0.1"/>
+      </dependentAssembly>
    </assemblyBinding>
  </runtime>

@@ -1,3 +1,2 @@
 # Usage: on line 2 put the release version, on line 3 put the version comment (example: beta)
-7.6.0
-beta06
+7.6.3
@@ -4,7 +4,7 @@
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-10.0.0.0" newVersion="10.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" culture="neutral" />
@@ -30,6 +30,10 @@
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-2.0.8.0" newVersion="2.0.8.0" />
+      </dependentAssembly>
    </assemblyBinding>
  </runtime>
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /></startup></configuration>
@@ -11,5 +11,5 @@ using System.Resources;

 [assembly: AssemblyVersion("1.0.*")]

-[assembly: AssemblyFileVersion("7.6.0")]
-[assembly: AssemblyInformationalVersion("7.6.0-beta06")]
+[assembly: AssemblyFileVersion("7.6.3")]
+[assembly: AssemblyInformationalVersion("7.6.3")]
@@ -4,12 +4,14 @@ using System.Text.RegularExpressions;
 using System.Web;
 using Umbraco.Core;

+[assembly: PreApplicationStartMethod(typeof(BindingRedirects), "Initialize")]
+
 namespace Umbraco.Core
 {
    /// <summary>
-    /// Manages any assembly binding redirects that cannot be done via config
+    /// Manages any assembly binding redirects that cannot be done via config (i.e. unsigned --> signed assemblies)
    /// </summary>
-    internal class BindingRedirects
+    public sealed class BindingRedirects
    {
        public static void Initialize()
        {
@@ -17,12 +19,9 @@ namespace Umbraco.Core
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
        }

-        private static readonly Regex Log4NetAssemblyPattern = new Regex("log4net, Version=([\\d\\.]+?), Culture=neutral, PublicKeyToken=null");
-        private const string Log4NetReplacement = "log4net, Version=1.2.15.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a";
-
-        private static readonly Regex HtmlAgilityAssemblyPattern = new Regex("HtmlAgilityPack, Version=([\\d\\.]+?), Culture=neutral, PublicKeyToken=bd319b19eaf3b43a");
-        private const string HtmlAgilityReplacement = "HtmlAgilityPack, Version=1.4.9.5, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a";
-
+        private static readonly Regex Log4NetAssemblyPattern = new Regex("log4net, Version=([\\d\\.]+?), Culture=neutral, PublicKeyToken=\\w+$", RegexOptions.Compiled);
+        private const string Log4NetReplacement = "log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a";
+        
        /// <summary>
        /// This is used to do an assembly binding redirect via code - normally required due to signature changes in assemblies
        /// </summary>
@@ -36,13 +35,7 @@ namespace Umbraco.Core
            {
                return Assembly.Load(Log4NetAssemblyPattern.Replace(args.Name, Log4NetReplacement));
            }
-
-            //HtmlAgility:            
-            if (HtmlAgilityAssemblyPattern.IsMatch(args.Name) && args.Name != HtmlAgilityReplacement)
-            {
-                return Assembly.Load(HtmlAgilityAssemblyPattern.Replace(args.Name, HtmlAgilityReplacement));
-            }
-
+            
            //AutoMapper:
            // ensure the assembly is indeed AutoMapper and that the PublicKeyToken is null before trying to Load again
            // do NOT just replace this with 'return Assembly', as it will cause an infinite loop -> stackoverflow
@@ -139,6 +139,12 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
        internal CommaDelimitedConfigurationElement DisallowedUploadFiles
        {
            get { return GetOptionalDelimitedElement("disallowedUploadFiles", new[] {"ashx", "aspx", "ascx", "config", "cshtml", "vbhtml", "asmx", "air", "axd"}); }
+        }
+
+        [ConfigurationProperty("allowedUploadFiles")]
+        internal CommaDelimitedConfigurationElement AllowedUploadFiles
+        {
+            get { return GetOptionalDelimitedElement("allowedUploadFiles", new string[0]); }
        }

        [ConfigurationProperty("cloneXmlContent")]
@@ -183,6 +189,12 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
            get { return GetOptionalTextElement("EnablePropertyValueConverters", false); }
        }

+        [ConfigurationProperty("loginBackgroundImage")]
+        internal InnerTextConfigurationElement<string> LoginBackgroundImage
+        {
+            get { return GetOptionalTextElement("loginBackgroundImage", string.Empty); }
+        }
+
        string IContentSection.NotificationEmailAddress
        {
            get { return Notifications.NotificationEmailAddress; }
@@ -301,6 +313,11 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
        IEnumerable<string> IContentSection.DisallowedUploadFiles
        {
            get { return DisallowedUploadFiles; }
+        }
+
+        IEnumerable<string> IContentSection.AllowedUploadFiles
+        {
+            get { return AllowedUploadFiles; }
        }

        bool IContentSection.CloneXmlContent
@@ -336,5 +353,10 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
        {
            get { return EnablePropertyValueConverters; }
        }
+
+        string IContentSection.LoginBackgroundImage
+        {
+            get { return LoginBackgroundImage; }
+        }
    }
 }
@@ -0,0 +1,19 @@
+using System.Linq;
+
+namespace Umbraco.Core.Configuration.UmbracoSettings
+{
+    public static class ContentSectionExtensions
+    {
+        /// <summary>
+        /// Determines if file extension is allowed for upload based on (optional) white list and black list
+        /// held in settings.
+        /// Allow upload if extension is whitelisted OR if there is no whitelist and extension is NOT blacklisted.
+        /// </summary>
+        public static bool IsFileAllowedForUpload(this IContentSection contentSection, string extension)
+        {
+            return contentSection.AllowedUploadFiles.Any(x => x.InvariantEquals(extension)) ||
+                (contentSection.AllowedUploadFiles.Any() == false &&
+                contentSection.DisallowedUploadFiles.Any(x => x.InvariantEquals(extension)) == false);
+        }
+    }
+}
@@ -52,7 +52,9 @@ namespace Umbraco.Core.Configuration.UmbracoSettings

        MacroErrorBehaviour MacroErrorBehaviour { get; }
        
-        IEnumerable<string> DisallowedUploadFiles { get; }
+        IEnumerable<string> DisallowedUploadFiles { get; }
+
+        IEnumerable<string> AllowedUploadFiles { get; }

        bool CloneXmlContent { get; }

@@ -72,5 +74,6 @@ namespace Umbraco.Core.Configuration.UmbracoSettings

        bool EnablePropertyValueConverters { get; }

+        string LoginBackgroundImage { get; }
    }
 }
@@ -8,6 +8,7 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
        Guid Id { get;  }
        string RepositoryUrl { get; }
        string WebServiceUrl { get; }
-        bool HasCustomWebServiceUrl { get; }
+        bool HasCustomWebServiceUrl { get; }
+        string RestApiUrl { get; }
    }
 }
@@ -0,0 +1,19 @@
+using System;
+using System.Linq;
+
+namespace Umbraco.Core.Configuration.UmbracoSettings
+{
+    public static class RepositoryConfigExtensions
+    {
+        //Our package repo
+        private static readonly Guid RepoGuid = new Guid("65194810-1f85-11dd-bd0b-0800200c9a66");
+
+        public static IRepository GetDefault(this IRepositoriesSection repos)
+        {
+            var found = repos.Repositories.FirstOrDefault(x => x.Id == RepoGuid);
+            if (found == null)
+                throw new InvalidOperationException("No default package repository found with id " + RepoGuid);
+            return found;
+        }
+    }
+}
@@ -38,9 +38,16 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
            get
            {
                var prop = Properties["webserviceurl"];
-                var repoUrl = this[prop] as ConfigurationElement;
-                return (repoUrl != null && repoUrl.ElementInformation.IsPresent);
+                return (string) prop.DefaultValue != (string) this[prop];                
            }
        }
+
+        [ConfigurationProperty("restapiurl", DefaultValue = "https://our.umbraco.org/webapi/packages/v1")]
+        public string RestApiUrl
+        {
+            get { return (string)base["restapiurl"]; }
+            set { base["restapiurl"] = value; }
+        }
+        
    }
 }
@@ -6,7 +6,7 @@ namespace Umbraco.Core.Configuration
 {
    public class UmbracoVersion
    {
-        private static readonly Version Version = new Version("7.6.0");
+        private static readonly Version Version = new Version("7.6.3");

        /// <summary>
        /// Gets the current version of Umbraco.
@@ -24,7 +24,7 @@ namespace Umbraco.Core.Configuration
        /// Gets the version comment (like beta or RC).
        /// </summary>
        /// <value>The version comment.</value>
-        public static string CurrentComment { get { return "beta06"; } }
+        public static string CurrentComment { get { return ""; } }

        // Get the version of the umbraco.dll by looking at a class in that dll
        // Had to do it like this due to medium trust issues, see: http://haacked.com/archive/2010/11/04/assembly-location-and-medium-trust.aspx
@@ -124,6 +124,11 @@ namespace Umbraco.Core
            /// </summary>
            public const string MemberGroup = "366E63B9-880F-4E13-A61C-98069B029728";

+            /// <summary>
+            /// Guid for a Member Group object.
+            /// </summary>
+            public static readonly Guid MemberGroupGuid = new Guid(MemberGroup);
+
            /// <summary>
            /// Guid for a Member Type object.
            /// </summary>
@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using umbraco.interfaces;
 using Umbraco.Core;

 namespace Umbraco.Core.Deploy
@@ -8,7 +9,7 @@ namespace Umbraco.Core.Deploy
    /// <summary>
    /// Connects to an Umbraco service.
    /// </summary>
-    public interface IServiceConnector
+    public interface IServiceConnector : IDiscoverable
    {
        /// <summary>
        /// Gets an artifact.
@@ -1,85 +1,177 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using System.Security.Permissions;
 using Umbraco.Core.Models;
 using Umbraco.Core.Models.EntityBase;

 namespace Umbraco.Core.Events
 {
-	/// <summary>
-	/// Event args for a strongly typed object that can support cancellation
-	/// </summary>
-	/// <typeparam name="T"></typeparam>
-	[HostProtection(SecurityAction.LinkDemand, SharedState = true)]
-	public class CancellableObjectEventArgs<T> : CancellableEventArgs, IEquatable<CancellableObjectEventArgs<T>>
-	{
-	    public CancellableObjectEventArgs(T eventObject, bool canCancel, EventMessages messages, IDictionary<string, object> additionalData)
+    /// <summary>
+    /// Used as a base class for the generic type CancellableObjectEventArgs{T} so that we can get direct 'object' access to the underlying EventObject
+    /// </summary>
+    [HostProtection(SecurityAction.LinkDemand, SharedState = true)]
+    public abstract class CancellableObjectEventArgs : CancellableEventArgs
+    {
+        protected CancellableObjectEventArgs(object eventObject, bool canCancel, EventMessages messages, IDictionary<string, object> additionalData)
            : base(canCancel, messages, additionalData)
-	    {
+        {
            EventObject = eventObject;
        }

-	    public CancellableObjectEventArgs(T eventObject, bool canCancel, EventMessages eventMessages)
+        protected CancellableObjectEventArgs(object eventObject, bool canCancel, EventMessages eventMessages)
            : base(canCancel, eventMessages)
        {
            EventObject = eventObject;
        }

-        public CancellableObjectEventArgs(T eventObject, EventMessages eventMessages)
+        protected CancellableObjectEventArgs(object eventObject, EventMessages eventMessages)
            : this(eventObject, true, eventMessages)
        {
        }

+        protected CancellableObjectEventArgs(object eventObject, bool canCancel)
+            : base(canCancel)
+        {
+            EventObject = eventObject;
+        }
+
+        protected CancellableObjectEventArgs(object eventObject)
+            : this(eventObject, true)
+        {
+        }
+
+        /// <summary>
+        /// Returns the object relating to the event
+        /// </summary>
+        /// <remarks>
+        /// This is protected so that inheritors can expose it with their own name
+        /// </remarks>
+        internal object EventObject { get; set; }
+
+    }
+
+    /// <summary>
+    /// Event args for a strongly typed object that can support cancellation
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    [HostProtection(SecurityAction.LinkDemand, SharedState = true)]
+    public class CancellableObjectEventArgs<T> : CancellableObjectEventArgs, IEquatable<CancellableObjectEventArgs<T>>
+    {
+        public CancellableObjectEventArgs(T eventObject, bool canCancel, EventMessages messages, IDictionary<string, object> additionalData)
+            : base(eventObject, canCancel, messages, additionalData)
+        {
+        }
+
+        public CancellableObjectEventArgs(T eventObject, bool canCancel, EventMessages eventMessages)
+            : base(eventObject, canCancel, eventMessages)
+        {
+        }
+
+        public CancellableObjectEventArgs(T eventObject, EventMessages eventMessages)
+            : base(eventObject, eventMessages)
+        {
+        }
+
        public CancellableObjectEventArgs(T eventObject, bool canCancel)
-			: base(canCancel)
-		{
-			EventObject = eventObject;
-		}
+            : base(eventObject, canCancel)
+        {
+        }

-		public CancellableObjectEventArgs(T eventObject)
-			: this(eventObject, true)
-		{
-		}
+        public CancellableObjectEventArgs(T eventObject)
+            : base(eventObject)
+        {
+        }

-		/// <summary>
-		/// Returns the object relating to the event
-		/// </summary>
-		/// <remarks>
-		/// This is protected so that inheritors can expose it with their own name
-		/// </remarks>
-		protected T EventObject { get; set; }
+        /// <summary>
+        /// Returns the object relating to the event
+        /// </summary>
+        /// <remarks>
+        /// This is protected so that inheritors can expose it with their own name
+        /// </remarks>
+        protected new T EventObject
+        {
+            get { return (T) base.EventObject; }
+            set { base.EventObject = value; }
+        }

-	    public bool Equals(CancellableObjectEventArgs<T> other)
-	    {
-	        if (ReferenceEquals(null, other)) return false;
-	        if (ReferenceEquals(this, other)) return true;
-	        return base.Equals(other) && EqualityComparer<T>.Default.Equals(EventObject, other.EventObject);
-	    }
+        public bool Equals(CancellableObjectEventArgs<T> other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return base.Equals(other) && EqualityComparer<T>.Default.Equals(EventObject, other.EventObject);
+        }

-	    public override bool Equals(object obj)
-	    {
-	        if (ReferenceEquals(null, obj)) return false;
-	        if (ReferenceEquals(this, obj)) return true;
-	        if (obj.GetType() != this.GetType()) return false;
-	        return Equals((CancellableObjectEventArgs<T>) obj);
-	    }
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((CancellableObjectEventArgs<T>)obj);
+        }

-	    public override int GetHashCode()
-	    {
-	        unchecked
-	        {
-	            return (base.GetHashCode() * 397) ^ EqualityComparer<T>.Default.GetHashCode(EventObject);
-	        }
-	    }
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                return (base.GetHashCode() * 397) ^ EqualityComparer<T>.Default.GetHashCode(EventObject);
+            }
+        }

-	    public static bool operator ==(CancellableObjectEventArgs<T> left, CancellableObjectEventArgs<T> right)
-	    {
-	        return Equals(left, right);
-	    }
+        public static bool operator ==(CancellableObjectEventArgs<T> left, CancellableObjectEventArgs<T> right)
+        {
+            return Equals(left, right);
+        }

-	    public static bool operator !=(CancellableObjectEventArgs<T> left, CancellableObjectEventArgs<T> right)
-	    {
-	        return !Equals(left, right);
-	    }
-	}
+        public static bool operator !=(CancellableObjectEventArgs<T> left, CancellableObjectEventArgs<T> right)
+        {
+            return !Equals(left, right);
+        }
+    }
+
+    [HostProtection(SecurityAction.LinkDemand, SharedState = true)]
+    public class CancellableEnumerableObjectEventArgs<T> : CancellableObjectEventArgs<IEnumerable<T>>, IEquatable<CancellableEnumerableObjectEventArgs<T>>
+    {
+        public CancellableEnumerableObjectEventArgs(IEnumerable<T> eventObject, bool canCancel, EventMessages messages, IDictionary<string, object> additionalData)
+            : base(eventObject, canCancel, messages, additionalData)
+        { }
+
+        public CancellableEnumerableObjectEventArgs(IEnumerable<T> eventObject, bool canCancel, EventMessages eventMessages)
+            : base(eventObject, canCancel, eventMessages)
+        { }
+
+        public CancellableEnumerableObjectEventArgs(IEnumerable<T> eventObject, EventMessages eventMessages)
+            : base(eventObject, eventMessages)
+        { }
+
+        public CancellableEnumerableObjectEventArgs(IEnumerable<T> eventObject, bool canCancel)
+            : base(eventObject, canCancel)
+        { }
+
+        public CancellableEnumerableObjectEventArgs(IEnumerable<T> eventObject)
+            : base(eventObject)
+        { }
+
+        public bool Equals(CancellableEnumerableObjectEventArgs<T> other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+
+            return EventObject.SequenceEqual(other.EventObject);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((CancellableEnumerableObjectEventArgs<T>)obj);
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCodeHelper.GetHashCode(EventObject);
+        }
+    }
 }
@@ -1,9 +1,14 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;

 namespace Umbraco.Core.Events
 {
-    public class DeleteEventArgs<TEntity> : CancellableObjectEventArgs<IEnumerable<TEntity>>, IEquatable<DeleteEventArgs<TEntity>>, IDeletingMediaFilesEventArgs
+    [SupersedeEvent(typeof(SaveEventArgs<>))]
+    [SupersedeEvent(typeof(PublishEventArgs<>))]
+    [SupersedeEvent(typeof(MoveEventArgs<>))]
+    [SupersedeEvent(typeof(CopyEventArgs<>))]
+    public class DeleteEventArgs<TEntity> : CancellableEnumerableObjectEventArgs<TEntity>, IEquatable<DeleteEventArgs<TEntity>>, IDeletingMediaFilesEventArgs
 	{
 	    /// <summary>
 	    /// Constructor accepting multiple entities that are used in the delete operation
@@ -106,7 +111,7 @@ namespace Umbraco.Core.Events
 	    {
 	        if (ReferenceEquals(null, other)) return false;
 	        if (ReferenceEquals(this, other)) return true;
-	        return base.Equals(other) && MediaFilesToDelete.Equals(other.MediaFilesToDelete);
+	        return base.Equals(other) && MediaFilesToDelete.SequenceEqual(other.MediaFilesToDelete);
 	    }

 	    public override bool Equals(object obj)
@@ -4,7 +4,7 @@ using System.Xml.Linq;

 namespace Umbraco.Core.Events
 {
-    public class ImportEventArgs<TEntity> : CancellableObjectEventArgs<IEnumerable<TEntity>>, IEquatable<ImportEventArgs<TEntity>>
+    public class ImportEventArgs<TEntity> : CancellableEnumerableObjectEventArgs<TEntity>, IEquatable<ImportEventArgs<TEntity>>
    {
        /// <summary>
        /// Constructor accepting an XElement with the xml being imported
@@ -4,7 +4,7 @@ using Umbraco.Core.Packaging.Models;

 namespace Umbraco.Core.Events
 {
-    internal class ImportPackageEventArgs<TEntity> : CancellableObjectEventArgs<IEnumerable<TEntity>>, IEquatable<ImportPackageEventArgs<TEntity>>
+    internal class ImportPackageEventArgs<TEntity> : CancellableEnumerableObjectEventArgs<TEntity>, IEquatable<ImportPackageEventArgs<TEntity>>
    {
        private readonly MetaData _packageMetaData;

@@ -32,7 +32,8 @@ namespace Umbraco.Core.Events
        public bool Equals(ImportPackageEventArgs<TEntity> other)
        {
            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
+            if (ReferenceEquals(this, other)) return true;
+            //TODO: MetaData for package metadata has no equality operators :/
            return base.Equals(other) && _packageMetaData.Equals(other._packageMetaData);
        }

@@ -5,8 +5,10 @@ using System.Linq;
 namespace Umbraco.Core.Events
 {
    /// <summary>
-    /// This event manager supports event cancellation and will raise the events as soon as they are tracked, it does not store tracked events
+    /// An IEventDispatcher that immediately raise all events.
    /// </summary>
+    /// <remarks>This means that events will be raised during the scope transaction,
+    /// whatever happens, and the transaction could roll back in the end.</remarks>
    internal class PassThroughEventDispatcher : IEventDispatcher
    {
        public bool DispatchCancelable(EventHandler eventHandler, object sender, CancellableEventArgs args, string eventName = null)
@@ -3,7 +3,7 @@ using System.Collections.Generic;

 namespace Umbraco.Core.Events
 {
-    public class PublishEventArgs<TEntity> : CancellableObjectEventArgs<IEnumerable<TEntity>>, IEquatable<PublishEventArgs<TEntity>>
+    public class PublishEventArgs<TEntity> : CancellableEnumerableObjectEventArgs<TEntity>, IEquatable<PublishEventArgs<TEntity>>
    {
        /// <summary>
        /// Constructor accepting multiple entities that are used in the publish operation
@@ -1,8 +1,9 @@
 using System.Collections.Generic;
+using System.Linq;

 namespace Umbraco.Core.Events
 {
-	public class SaveEventArgs<TEntity> : CancellableObjectEventArgs<IEnumerable<TEntity>>
+	public class SaveEventArgs<TEntity> : CancellableEnumerableObjectEventArgs<TEntity>
 	{
        /// <summary>
        /// Constructor accepting multiple entities that are used in the saving operation
@@ -116,7 +117,5 @@ namespace Umbraco.Core.Events
 		{
 			get { return EventObject; }
 		}
-
-
 	}
 }
@@ -3,11 +3,9 @@ using Umbraco.Core.IO;
 namespace Umbraco.Core.Events
 {
    /// <summary>
-    /// This event manager is created for each scope and is aware of if it is nested in an outer scope
+    /// An IEventDispatcher that queues events, and raise them when the scope
+    /// exits and has been completed.
    /// </summary>
-    /// <remarks>
-    /// The outer scope is the only scope that can raise events, the inner scope's will defer to the outer scope
-    /// </remarks>
    internal class ScopeEventDispatcher : ScopeEventDispatcherBase
    {
        public ScopeEventDispatcher()
@@ -1,11 +1,23 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
+using Umbraco.Core.Models.EntityBase;

 namespace Umbraco.Core.Events
 {
+    /// <summary>
+    /// An IEventDispatcher that queues events.
+    /// </summary>
+    /// <remarks>
+    /// <para>Can raise, or ignore, cancelable events, depending on option.</para>
+    /// <para>Implementations must override ScopeExitCompleted to define what
+    /// to do with the events when the scope exits and has been completed.</para>
+    /// <para>If the scope exits without being completed, events are ignored.</para>
+    /// </remarks>
    public abstract class ScopeEventDispatcherBase : IEventDispatcher
    {
+        //events will be enlisted in the order they are raised
        private List<IEventDefinition> _events;
        private readonly bool _raiseCancelable;

@@ -64,29 +76,263 @@ namespace Umbraco.Core.Events
        {
            if (_events == null)
                return Enumerable.Empty<IEventDefinition>();
-
+            
            switch (filter)
            {
                case EventDefinitionFilter.All:
-                    return _events;
+                    return FilterSupersededAndUpdateToLatestEntity(_events);
                case EventDefinitionFilter.FirstIn:
                    var l1 = new OrderedHashSet<IEventDefinition>();
                    foreach (var e in _events)
                    {
                        l1.Add(e);
                    }
-                    return l1;
+                    return FilterSupersededAndUpdateToLatestEntity(l1);
                case EventDefinitionFilter.LastIn:
                    var l2 = new OrderedHashSet<IEventDefinition>(keepOldest: false);
                    foreach (var e in _events)
                    {
                        l2.Add(e);
                    }
-                    return l2;
+                    return FilterSupersededAndUpdateToLatestEntity(l2);
                default:
                    throw new ArgumentOutOfRangeException("filter", filter, null);
            }
        }
+        
+        private class EventDefinitionTypeData
+        {
+            public IEventDefinition EventDefinition { get; set; }
+            public Type EventArgType { get; set; }
+            public SupersedeEventAttribute[] SupersedeAttributes { get; set; }
+        }
+        
+        /// <summary>
+        /// This will iterate over the events (latest first) and filter out any events or entities in event args that are included 
+        /// in more recent events that Supersede previous ones. For example, If an Entity has been Saved and then Deleted, we don't want
+        /// to raise the Saved event (well actually we just don't want to include it in the args for that saved event)
+        /// </summary>
+        /// <param name="events"></param>
+        /// <returns></returns>
+        private static IEnumerable<IEventDefinition> FilterSupersededAndUpdateToLatestEntity(IReadOnlyList<IEventDefinition> events)
+        {
+            //used to keep the 'latest' entity and associated event definition data
+            var allEntities = new List<Tuple<IEntity, EventDefinitionTypeData>>();
+
+            //tracks all CancellableObjectEventArgs instances in the events which is the only type of args we can work with
+            var cancelableArgs = new List<CancellableObjectEventArgs>();
+
+            var result = new List<IEventDefinition>();
+
+            //This will eagerly load all of the event arg types and their attributes so we don't have to continuously look this data up
+            var allArgTypesWithAttributes = events.Select(x => x.Args.GetType())
+                .Distinct()
+                .ToDictionary(x => x, x => x.GetCustomAttributes<SupersedeEventAttribute>(false).ToArray());
+               
+            //Iterate all events and collect the actual entities in them and relates them to their corresponding EventDefinitionTypeData
+            //we'll process the list in reverse because events are added in the order they are raised and we want to filter out
+            //any entities from event args that are not longer relevant 
+            //(i.e. if an item is Deleted after it's Saved, we won't include the item in the Saved args)
+            for (var index = events.Count - 1; index >= 0; index--)
+            {
+                var eventDefinition = events[index];
+
+                var argType = eventDefinition.Args.GetType();
+                var attributes = allArgTypesWithAttributes[eventDefinition.Args.GetType()];
+
+                var meta = new EventDefinitionTypeData
+                {
+                    EventDefinition = eventDefinition,
+                    EventArgType = argType,
+                    SupersedeAttributes = attributes
+                };
+
+                var args = eventDefinition.Args as CancellableObjectEventArgs;
+                if (args != null)
+                {
+                    var list = TypeHelper.CreateGenericEnumerableFromObject(args.EventObject);
+
+                    if (list == null)
+                    {
+                        //extract the event object
+                        var obj = args.EventObject as IEntity;
+                        if (obj != null)
+                        {
+                            //Now check if this entity already exists in other event args that supersede this current event arg type
+                            if (IsFiltered(obj, meta, allEntities) == false)
+                            {
+                                //if it's not filtered we can adde these args to the response
+                                cancelableArgs.Add(args);
+                                result.Add(eventDefinition);
+                                //track the entity
+                                allEntities.Add(Tuple.Create(obj, meta));
+                            }
+                        }
+                        else
+                        {
+                            //Can't retrieve the entity so cant' filter or inspect, just add to the output
+                            result.Add(eventDefinition);                            
+                        }
+                    }
+                    else
+                    {
+                        var toRemove = new List<IEntity>();
+                        foreach (var entity in list)
+                        {
+                            //extract the event object
+                            var obj = entity as IEntity;
+                            if (obj != null)
+                            {
+                                //Now check if this entity already exists in other event args that supersede this current event arg type
+                                if (IsFiltered(obj, meta, allEntities))
+                                {
+                                    //track it to be removed
+                                    toRemove.Add(obj);
+                                }
+                                else
+                                {
+                                    //track the entity, it's not filtered
+                                    allEntities.Add(Tuple.Create(obj, meta));
+                                }
+                            }
+                            else
+                            {
+                                //we don't need to do anything here, we can't cast to IEntity so we cannot filter, so it will just remain in the list
+                            }
+                        }
+
+                        //remove anything that has been filtered
+                        foreach (var entity in toRemove)
+                        {
+                            list.Remove(entity);
+                        }
+
+                        //track the event and include in the response if there's still entities remaining in the list
+                        if (list.Count > 0)
+                        {
+                            if (toRemove.Count > 0)
+                            {
+                                //re-assign if the items have changed
+                                args.EventObject = list;
+                            }
+                            cancelableArgs.Add(args);
+                            result.Add(eventDefinition);
+                        }
+                    }
+                }
+                else
+                {
+                    //it's not a cancelable event arg so we just include it in the result
+                    result.Add(eventDefinition);
+                }
+            }
+
+            //Now we'll deal with ensuring that only the latest(non stale) entities are used throughout all event args
+            UpdateToLatestEntities(allEntities, cancelableArgs);
+
+            //we need to reverse the result since we've been adding by latest added events first!
+            result.Reverse();
+
+            return result;
+        }
+
+        private static void UpdateToLatestEntities(IEnumerable<Tuple<IEntity, EventDefinitionTypeData>> allEntities, IEnumerable<CancellableObjectEventArgs> cancelableArgs)
+        {
+            //Now we'll deal with ensuring that only the latest(non stale) entities are used throughout all event args
+
+            var latestEntities = new OrderedHashSet<IEntity>(keepOldest: true);
+            foreach (var entity in allEntities.OrderByDescending(entity => entity.Item1.UpdateDate))
+            {
+                latestEntities.Add(entity.Item1);
+            }
+
+            foreach (var args in cancelableArgs)
+            {
+                var list = TypeHelper.CreateGenericEnumerableFromObject(args.EventObject);
+                if (list == null)
+                {
+                    //try to find the args entity in the latest entity - based on the equality operators, this will 
+                    //match by Id since that is the default equality checker for IEntity. If one is found, than it is 
+                    //the most recent entity instance so update the args with that instance so we don't emit a stale instance.
+                    var foundEntity = latestEntities.FirstOrDefault(x => Equals(x, args.EventObject));
+                    if (foundEntity != null)
+                    {
+                        args.EventObject = foundEntity;
+                    }
+                }
+                else
+                {
+                    var updated = false;
+
+                    for (int i = 0; i < list.Count; i++)
+                    {
+                        //try to find the args entity in the latest entity - based on the equality operators, this will 
+                        //match by Id since that is the default equality checker for IEntity. If one is found, than it is 
+                        //the most recent entity instance so update the args with that instance so we don't emit a stale instance.
+                        var foundEntity = latestEntities.FirstOrDefault(x => Equals(x, list[i]));
+                        if (foundEntity != null)
+                        {
+                            list[i] = foundEntity;
+                            updated = true;
+                        }
+                    }
+
+                    if (updated)
+                    {
+                        args.EventObject = list;
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// This will check against all of the processed entity/events (allEntities) to see if this entity already exists in 
+        /// event args that supersede the event args being passed in and if so returns true.
+        /// </summary>
+        /// <param name="entity"></param>
+        /// <param name="eventDef"></param>
+        /// <param name="allEntities"></param>
+        /// <returns></returns>
+        private static bool IsFiltered(
+            IEntity entity,
+            EventDefinitionTypeData eventDef,
+            List<Tuple<IEntity, EventDefinitionTypeData>> allEntities)
+        {
+            var argType = eventDef.EventDefinition.Args.GetType();
+
+            //check if the entity is found in any processed event data that could possible supersede this one
+            var foundByEntity = allEntities
+                .Where(x => x.Item2.SupersedeAttributes.Length > 0
+                            //if it's the same arg type than it cannot supersede                
+                            && x.Item2.EventArgType != argType
+                            && Equals(x.Item1, entity))
+                .ToArray();
+
+            //no args have been processed with this entity so it should not be filtered
+            if (foundByEntity.Length == 0)
+                return false;
+
+            if (argType.IsGenericType)
+            {
+                var supercededBy = foundByEntity
+                    .FirstOrDefault(x =>
+                        x.Item2.SupersedeAttributes.Any(y =>
+                            //if the attribute type is a generic type def then compare with the generic type def of the event arg
+                                (y.SupersededEventArgsType.IsGenericTypeDefinition && y.SupersededEventArgsType == argType.GetGenericTypeDefinition())
+                                //if the attribute type is not a generic type def then compare with the normal type of the event arg
+                                || (y.SupersededEventArgsType.IsGenericTypeDefinition == false && y.SupersededEventArgsType == argType)));
+                return supercededBy != null;
+            }
+            else
+            {
+                var supercededBy = foundByEntity
+                    .FirstOrDefault(x =>
+                        x.Item2.SupersedeAttributes.Any(y =>
+                            //since the event arg type is not a generic type, then we just compare type 1:1
+                                y.SupersededEventArgsType == argType));
+                return supercededBy != null;
+            }
+        }

        public void ScopeExit(bool completed)
        {
@@ -0,0 +1,20 @@
+using System;
+
+namespace Umbraco.Core.Events
+{
+    /// <summary>
+    /// This is used to know if the event arg attributed should supersede another event arg type when 
+    /// tracking events for the same entity. If one event args supercedes another then the event args that have been superseded
+    /// will mean that the event will not be dispatched or the args will be filtered to exclude the entity.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
+    internal class SupersedeEventAttribute : Attribute
+    {
+        public Type SupersededEventArgsType { get; private set; }
+
+        public SupersedeEventAttribute(Type supersededEventArgsType)
+        {
+            SupersededEventArgsType = supersededEventArgsType;
+        }
+    }
+}
@@ -0,0 +1,12 @@
+using System;
+
+namespace Umbraco.Core.Exceptions
+{
+    internal class ConnectionException : Exception
+    {
+        public ConnectionException(string message, Exception innerException) : base(message, innerException)
+        {
+            
+        }
+    }
+}
@@ -7,7 +7,7 @@ namespace Umbraco.Core.Exceptions
        public T Operation { get; private set; }

        public DataOperationException(T operation, string message)
-            :base(message)
+            : base(message)
        {
            Operation = operation;
        }
@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
@@ -7,32 +6,32 @@ using System.Text;

 namespace Umbraco.Core
 {
-	/// <summary>
-	/// Used to create a hash code from multiple objects.
-	/// </summary>
-	/// <remarks>
-	/// .Net has a class the same as this: System.Web.Util.HashCodeCombiner and of course it works for all sorts of things
-	/// which we've not included here as we just need a quick easy class for this in order to create a unique
-	/// hash of directories/files to see if they have changed.
-	/// </remarks>
-	internal class HashCodeCombiner
-	{
-		private long _combinedHash = 5381L;
+    /// <summary>
+    /// Used to create a hash code from multiple objects.
+    /// </summary>
+    /// <remarks>
+    /// .Net has a class the same as this: System.Web.Util.HashCodeCombiner and of course it works for all sorts of things
+    /// which we've not included here as we just need a quick easy class for this in order to create a unique
+    /// hash of directories/files to see if they have changed.
+    /// </remarks>
+    internal class HashCodeCombiner
+    {
+        private long _combinedHash = 5381L;

-		internal void AddInt(int i)
-		{
-			_combinedHash = ((_combinedHash << 5) + _combinedHash) ^ i;
-		}
+        internal void AddInt(int i)
+        {
+            _combinedHash = ((_combinedHash << 5) + _combinedHash) ^ i;
+        }

-		internal void AddObject(object o)
-		{
-			AddInt(o.GetHashCode());
-		}
+        internal void AddObject(object o)
+        {
+            AddInt(o.GetHashCode());
+        }

-		internal void AddDateTime(DateTime d)
-		{
-			AddInt(d.GetHashCode());
-		}
+        internal void AddDateTime(DateTime d)
+        {
+            AddInt(d.GetHashCode());
+        }

        internal void AddString(string s)
        {
@@ -40,61 +39,61 @@ namespace Umbraco.Core
                AddInt((StringComparer.InvariantCulture).GetHashCode(s));
        }

-		internal void AddCaseInsensitiveString(string s)
-		{
-			if (s != null)
-				AddInt((StringComparer.InvariantCultureIgnoreCase).GetHashCode(s));
-		}
+        internal void AddCaseInsensitiveString(string s)
+        {
+            if (s != null)
+                AddInt((StringComparer.InvariantCultureIgnoreCase).GetHashCode(s));
+        }

-		internal void AddFileSystemItem(FileSystemInfo f)
-		{
-			//if it doesn't exist, don't proceed.
-			if (!f.Exists)
-				return;
+        internal void AddFileSystemItem(FileSystemInfo f)
+        {
+            //if it doesn't exist, don't proceed.
+            if (!f.Exists)
+                return;

-			AddCaseInsensitiveString(f.FullName);
-			AddDateTime(f.CreationTimeUtc);
-			AddDateTime(f.LastWriteTimeUtc);
-			
-			//check if it is a file or folder 
-			var fileInfo = f as FileInfo;
-			if (fileInfo != null)
-			{
-				AddInt(fileInfo.Length.GetHashCode());
-			}
-			
-			var dirInfo = f as DirectoryInfo;
-			if (dirInfo != null)
-			{
-				foreach (var d in dirInfo.GetFiles())
-				{
-					AddFile(d);
-				}
-				foreach (var s in dirInfo.GetDirectories())
-				{
-					AddFolder(s);
-				}
-			}
-		}
+            AddCaseInsensitiveString(f.FullName);
+            AddDateTime(f.CreationTimeUtc);
+            AddDateTime(f.LastWriteTimeUtc);

-		internal void AddFile(FileInfo f)
-		{
-			AddFileSystemItem(f);			
-		}
+            //check if it is a file or folder 
+            var fileInfo = f as FileInfo;
+            if (fileInfo != null)
+            {
+                AddInt(fileInfo.Length.GetHashCode());
+            }

-		internal void AddFolder(DirectoryInfo d)
-		{
-			AddFileSystemItem(d);			
-		}
+            var dirInfo = f as DirectoryInfo;
+            if (dirInfo != null)
+            {
+                foreach (var d in dirInfo.GetFiles())
+                {
+                    AddFile(d);
+                }
+                foreach (var s in dirInfo.GetDirectories())
+                {
+                    AddFolder(s);
+                }
+            }
+        }

-		/// <summary>
-		/// Returns the hex code of the combined hash code
-		/// </summary>
-		/// <returns></returns>
-		internal string GetCombinedHashCode()
-		{
-			return _combinedHash.ToString("x", CultureInfo.InvariantCulture);
-		}
+        internal void AddFile(FileInfo f)
+        {
+            AddFileSystemItem(f);
+        }

-	}
+        internal void AddFolder(DirectoryInfo d)
+        {
+            AddFileSystemItem(d);
+        }
+
+        /// <summary>
+        /// Returns the hex code of the combined hash code
+        /// </summary>
+        /// <returns></returns>
+        internal string GetCombinedHashCode()
+        {
+            return _combinedHash.ToString("x", CultureInfo.InvariantCulture);
+        }
+
+    }
 }
@@ -0,0 +1,104 @@
+using System.Collections.Generic;
+
+namespace Umbraco.Core
+{
+    /// <summary>
+    /// Borrowed from http://stackoverflow.com/a/2575444/694494
+    /// </summary>
+    internal static class HashCodeHelper
+    {
+        public static int GetHashCode<T1, T2>(T1 arg1, T2 arg2)
+        {
+            unchecked
+            {
+                return 31 * arg1.GetHashCode() + arg2.GetHashCode();
+            }
+        }
+
+        public static int GetHashCode<T1, T2, T3>(T1 arg1, T2 arg2, T3 arg3)
+        {
+            unchecked
+            {
+                int hash = arg1.GetHashCode();
+                hash = 31 * hash + arg2.GetHashCode();
+                return 31 * hash + arg3.GetHashCode();
+            }
+        }
+
+        public static int GetHashCode<T1, T2, T3, T4>(T1 arg1, T2 arg2, T3 arg3,
+            T4 arg4)
+        {
+            unchecked
+            {
+                int hash = arg1.GetHashCode();
+                hash = 31 * hash + arg2.GetHashCode();
+                hash = 31 * hash + arg3.GetHashCode();
+                return 31 * hash + arg4.GetHashCode();
+            }
+        }
+
+        public static int GetHashCode<T>(T[] list)
+        {
+            unchecked
+            {
+                int hash = 0;
+                foreach (var item in list)
+                {
+                    if (item == null) continue;
+                    hash = 31 * hash + item.GetHashCode();
+                }
+                return hash;
+            }
+        }
+
+        public static int GetHashCode<T>(IEnumerable<T> list)
+        {
+            unchecked
+            {
+                int hash = 0;
+                foreach (var item in list)
+                {
+                    if (item == null) continue;
+                    hash = 31 * hash + item.GetHashCode();
+                }
+                return hash;
+            }
+        }
+
+        /// <summary>
+        /// Gets a hashcode for a collection for that the order of items 
+        /// does not matter.
+        /// So {1, 2, 3} and {3, 2, 1} will get same hash code.
+        /// </summary>
+        public static int GetHashCodeForOrderNoMatterCollection<T>(
+            IEnumerable<T> list)
+        {
+            unchecked
+            {
+                int hash = 0;
+                int count = 0;
+                foreach (var item in list)
+                {
+                    if (item == null) continue;
+                    hash += item.GetHashCode();
+                    count++;
+                }
+                return 31 * hash + count.GetHashCode();
+            }
+        }
+
+        /// <summary>
+        /// Alternative way to get a hashcode is to use a fluent 
+        /// interface like this:<br />
+        /// return 0.CombineHashCode(field1).CombineHashCode(field2).
+        ///     CombineHashCode(field3);
+        /// </summary>
+        public static int CombineHashCode<T>(this int hashCode, T arg)
+        {
+            unchecked
+            {
+                return 31 * hashCode + arg.GetHashCode();
+            }
+        }
+    }
+}
@@ -4,38 +4,144 @@ using System.IO;

 namespace Umbraco.Core.IO
 {
-	public interface IFileSystem
+    /// <summary>
+    /// Provides methods allowing the manipulation of files within an Umbraco application.
+    /// </summary>
+    public interface IFileSystem
    {
+        /// <summary>
+        /// Gets all directories matching the given path.
+        /// </summary>
+        /// <param name="path">The path to the directories.</param>
+        /// <returns>
+        /// The <see cref="IEnumerable{String}"/> representing the matched directories.
+        /// </returns>
        IEnumerable<string> GetDirectories(string path);

+        /// <summary>
+        /// Deletes the specified directory.
+        /// </summary>
+        /// <param name="path">The name of the directory to remove.</param>
        void DeleteDirectory(string path);

+        /// <summary>
+        /// Deletes the specified directory and, if indicated, any subdirectories and files in the directory.
+        /// </summary>
+        /// <remarks>Azure blob storage has no real concept of directories so deletion is always recursive.</remarks>
+        /// <param name="path">The name of the directory to remove.</param>
+        /// <param name="recursive">Whether to remove directories, subdirectories, and files in path.</param>
        void DeleteDirectory(string path, bool recursive);

+        /// <summary>
+        /// Determines whether the specified directory exists.
+        /// </summary>
+        /// <param name="path">The directory to check.</param>
+        /// <returns>
+        /// <c>True</c> if the directory exists and the user has permission to view it; otherwise <c>false</c>.
+        /// </returns>
        bool DirectoryExists(string path);

+        /// <summary>
+        /// Adds a file to the file system.
+        /// </summary>
+        /// <param name="path">The path to the given file.</param>
+        /// <param name="stream">The <see cref="Stream"/> containing the file contents.</param>
        void AddFile(string path, Stream stream);

+        /// <summary>
+        /// Adds a file to the file system.
+        /// </summary>
+        /// <param name="path">The path to the given file.</param>
+        /// <param name="stream">The <see cref="Stream"/> containing the file contents.</param>
+        /// <param name="overrideIfExists">Whether to override the file if it already exists.</param>
        void AddFile(string path, Stream stream, bool overrideIfExists);

+        /// <summary>
+        /// Gets all files matching the given path.
+        /// </summary>
+        /// <param name="path">The path to the files.</param>
+        /// <returns>
+        /// The <see cref="IEnumerable{String}"/> representing the matched files.
+        /// </returns>
        IEnumerable<string> GetFiles(string path);

+        /// <summary>
+        /// Gets all files matching the given path and filter.
+        /// </summary>
+        /// <param name="path">The path to the files.</param>
+        /// <param name="filter">A filter that allows the querying of file extension. <example>*.jpg</example></param>
+        /// <returns>
+        /// The <see cref="IEnumerable{String}"/> representing the matched files.
+        /// </returns>
        IEnumerable<string> GetFiles(string path, string filter);

+        /// <summary>
+        /// Gets a <see cref="Stream"/> representing the file at the gieven path.
+        /// </summary>
+        /// <param name="path">The path to the file.</param>
+        /// <returns>
+        /// <see cref="Stream"/>.
+        /// </returns>
        Stream OpenFile(string path);

+        /// <summary>
+        /// Deletes the specified file.
+        /// </summary>
+        /// <param name="path">The name of the file to remove.</param>
        void DeleteFile(string path);

+        /// <summary>
+        /// Determines whether the specified file exists.
+        /// </summary>
+        /// <param name="path">The file to check.</param>
+        /// <returns>
+        /// <c>True</c> if the file exists and the user has permission to view it; otherwise <c>false</c>.
+        /// </returns>
        bool FileExists(string path);

+        /// <summary>
+        /// Returns the application relative path to the file.
+        /// </summary>
+        /// <param name="fullPathOrUrl">The full path or url.</param>
+        /// <returns>
+        /// The <see cref="string"/> representing the relative path.
+        /// </returns>
        string GetRelativePath(string fullPathOrUrl);

+        /// <summary>
+        /// Gets the full qualified path to the file.
+        /// </summary>
+        /// <param name="path">The file to return the full path for.</param>
+        /// <returns>
+        /// The <see cref="string"/> representing the full path.
+        /// </returns>
        string GetFullPath(string path);

+        /// <summary>
+        /// Returns the application relative url to the file.
+        /// </summary>
+        /// <param name="path">The path to return the url for.</param>
+        /// <returns>
+        /// <see cref="string"/> representing the relative url.
+        /// </returns>
        string GetUrl(string path);

+        /// <summary>
+        /// Gets the last modified date/time of the file, expressed as a UTC value.
+        /// </summary>
+        /// <param name="path">The path to the file.</param>
+        /// <returns>
+        /// <see cref="DateTimeOffset"/>.
+        /// </returns>
        DateTimeOffset GetLastModified(string path);

+        /// <summary>
+        /// Gets the created date/time of the file, expressed as a UTC value.
+        /// </summary>
+        /// <param name="path">The path to the file.</param>
+        /// <returns>
+        /// <see cref="DateTimeOffset"/>.
+        /// </returns>
        DateTimeOffset GetCreated(string path);
    }

@@ -31,6 +31,7 @@ namespace Umbraco.Core.IO
        private long _folderCounter;
        private bool _folderCounterInitialized;

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        private static readonly Dictionary<int, string> DefaultSizes = new Dictionary<int, string>
        {
            { 100, "thumb" },
@@ -158,7 +159,7 @@ namespace Umbraco.Core.IO

            // ReSharper disable once AssignNullToNotNullAttribute
            var filepath = UmbracoConfig.For.UmbracoSettings().Content.UploadAllowDirectories
-                ? Path.Combine(folder, filename)
+                ? Path.Combine(folder, filename).Replace('\\', '/')
                : folder + "-" + filename;

            return filepath;
@@ -263,7 +264,7 @@ namespace Umbraco.Core.IO
            var filename = Path.GetFileName(sourcepath);
            var filepath = GetMediaPath(filename, content.Key, propertyType.Key);
            this.CopyFile(sourcepath, filepath);
-            CopyThumbnails(sourcepath, filepath);
+            
            return filepath;
        }

@@ -312,29 +313,17 @@ namespace Umbraco.Core.IO
            }
        }

-        // sets a file for the FileUpload property editor
-        // ie generates thumbnails and populates autofill properties
+        /// <summary>
+        /// Sets a file for the FileUpload property editor and populates autofill properties
+        /// </summary>
+        /// <param name="content"></param>
+        /// <param name="property"></param>
+        /// <param name="filepath"></param>
+        /// <param name="filestream"></param>
        private void SetUploadFile(IContentBase content, Property property, string filepath, Stream filestream)
-        {
-            // check if file is an image (and supports resizing and thumbnails etc)
-            var extension = Path.GetExtension(filepath);
-            var isImage = IsImageFile(extension);
-
-            // specific stuff for images (thumbnails etc)
-            if (isImage)
-            {
-                using (var image = Image.FromStream(filestream))
-                {
-                    // use one image for all
-                    GenerateThumbnails(image, filepath, property.PropertyType);
-                    _uploadAutoFillProperties.Populate(content, property.Alias, filepath, filestream, image);
-                }
-            }
-            else
-            {
-                // will use filepath for extension, and filestream for length
-                _uploadAutoFillProperties.Populate(content, property.Alias, filepath, filestream);
-            }
+        {            
+            // will use filepath for extension, and filestream for length
+            _uploadAutoFillProperties.Populate(content, property.Alias, filepath, filestream);
        }

        #endregion
@@ -401,6 +390,7 @@ namespace Umbraco.Core.IO

        // note: this does not find 'custom' thumbnails?
        // will find _thumb and _big-thumb but NOT _custom?
+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public IEnumerable<string> GetThumbnails(string path)
        {
            var parentDirectory = Path.GetDirectoryName(path);
@@ -421,12 +411,14 @@ namespace Umbraco.Core.IO
            DeleteThumbnails(path);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public void DeleteThumbnails(string path)
        {
            GetThumbnails(path)
                .ForEach(x => base.DeleteFile(x));
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public void CopyThumbnails(string sourcePath, string targetPath)
        {
            var targetPathBase = Path.GetDirectoryName(targetPath) ?? "";
@@ -479,6 +471,7 @@ namespace Umbraco.Core.IO

        #region GenerateThumbnails

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public IEnumerable<ResizedImage> GenerateThumbnails(
            Image image,
            string filepath,
@@ -500,6 +493,7 @@ namespace Umbraco.Core.IO
            return GenerateThumbnails(image, filepath, additionalSizes);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public IEnumerable<ResizedImage> GenerateThumbnails(
            Image image,
            string filepath,
@@ -522,6 +516,7 @@ namespace Umbraco.Core.IO
                .ToList(); // now
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public IEnumerable<ResizedImage> GenerateThumbnails(
            Stream filestream,
            string filepath,
@@ -535,6 +530,7 @@ namespace Umbraco.Core.IO
            }
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public IEnumerable<ResizedImage> GenerateThumbnails(
            Image image,
            string filepath,
@@ -556,16 +552,19 @@ namespace Umbraco.Core.IO

        #region GenerateResized - Generate at resized filepath derived from origin filepath

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResized(Image originImage, string originFilepath, string sizeName, int maxWidthHeight)
        {
            return GenerateResized(originImage, originFilepath, sizeName, maxWidthHeight, -1, -1);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResized(Image originImage, string originFilepath, string sizeName, int fixedWidth, int fixedHeight)
        {
            return GenerateResized(originImage, originFilepath, sizeName, -1, fixedWidth, fixedHeight);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResized(Image originImage, string originFilepath, string sizeName, int maxWidthHeight, int fixedWidth, int fixedHeight)
        {
            if (string.IsNullOrWhiteSpace(sizeName))
@@ -581,16 +580,19 @@ namespace Umbraco.Core.IO

        #region GenerateResizedAt - Generate at specified resized filepath

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResizedAt(Image originImage, string resizedFilepath, int maxWidthHeight)
        {
            return GenerateResizedAt(originImage, resizedFilepath, maxWidthHeight, -1, -1);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResizedAt(Image originImage, int fixedWidth, int fixedHeight, string resizedFilepath)
        {
            return GenerateResizedAt(originImage, resizedFilepath, -1, fixedWidth, fixedHeight);
        }

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public ResizedImage GenerateResizedAt(Image originImage, string resizedFilepath, int maxWidthHeight, int fixedWidth, int fixedHeight)
        {
            // target dimensions
@@ -699,6 +701,7 @@ namespace Umbraco.Core.IO

        #region Inner classes

+        [Obsolete("This should no longer be used, image manipulation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public class ResizedImage
        {
            public ResizedImage()
@@ -158,7 +158,7 @@ namespace Umbraco.Core.IO
            // if can seek, be safe and go back to start, else...
            // hope that the stream hasn't been read already
            if (stream.CanSeek)
-                stream.Seek(0, 0);
+                stream.Seek(0, SeekOrigin.Begin);

            using (var destination = (Stream) File.Create(fullPath))
                stream.CopyTo(destination);
@@ -52,9 +52,20 @@ namespace Umbraco.Core.IO
                try
                {
                    Directory.Delete(dir, true);
-                    dir = dir.Substring(0, dir.Length - _shadowPath.Length - 1);
-                    if (Directory.EnumerateFileSystemEntries(dir).Any() == false)
-                        Directory.Delete(dir, true);
+
+                    // shadowPath make be path/to/dir, remove each
+                    dir = dir.Replace("/", "\\");
+                    var min = IOHelper.MapPath("~/App_Data/TEMP/ShadowFs").Length;
+                    var pos = dir.LastIndexOf("\\", StringComparison.OrdinalIgnoreCase);
+                    while (pos > min)
+                    {
+                        dir = dir.Substring(0, pos);
+                        if (Directory.EnumerateFileSystemEntries(dir).Any() == false)
+                            Directory.Delete(dir, true);
+                        else
+                            break;
+                        pos = dir.LastIndexOf("\\", StringComparison.OrdinalIgnoreCase);
+                    }
                }
                catch
                {
@@ -16,7 +16,7 @@ namespace Umbraco.Core.Logging
    /// This is an old/deprecated logger and has been superceded by ParallelForwardingAppender which is included in Umbraco and 
    /// also by AsyncForwardingAppender in the Log4Net.Async library.
 	/// </summary>
-	[Obsolete("This is superceded by the ParallelForwardingAppender, this will be removed in v8")]
+	[Obsolete("This is superceded by the ParallelForwardingAppender, this will be removed in v8, do not use this")]
    [EditorBrowsable(EditorBrowsableState.Never)]
 	public class AsynchronousRollingFileAppender : RollingFileAppender
 	{
@@ -13,301 +13,8 @@ namespace Umbraco.Core.Logging
    /// <remarks>
    /// Borrowed from https://github.com/cjbhaines/Log4Net.Async - will reference Nuget packages directly in v8
    /// </remarks>
-    public class ParallelForwardingAppender : AsyncForwardingAppenderBase, IDisposable
+    [Obsolete("Use the Log4Net.Async.ParallelForwardingAppender instead this will be removed in future versions")]
+    public class ParallelForwardingAppender : Log4Net.Async.ParallelForwardingAppender
    {
-        #region Private Members
-
-        private const int DefaultBufferSize = 1000;
-        private BlockingCollection<LoggingEventContext> _loggingEvents;
-        private CancellationTokenSource _loggingCancelationTokenSource;
-        private CancellationToken _loggingCancelationToken;
-        private Task _loggingTask;
-        private Double _shutdownFlushTimeout = 2;
-        private TimeSpan _shutdownFlushTimespan = TimeSpan.FromSeconds(2);
-        private static readonly Type ThisType = typeof(ParallelForwardingAppender);
-        private volatile bool shutDownRequested;
-        private int? bufferSize = DefaultBufferSize;
-
-        #endregion Private Members
-
-        #region Properties
-
-        /// <summary>
-        /// Gets or sets the number of LoggingEvents that will be buffered.  Set to null for unlimited.
-        /// </summary>
-        public override int? BufferSize
-        {
-            get { return bufferSize; }
-            set { bufferSize = value; }
-        }
-
-        public int BufferEntryCount
-        {
-            get
-            {
-                if (_loggingEvents == null) return 0;
-                return _loggingEvents.Count;
-            }
-        }
-
-        /// <summary>
-        /// Gets or sets the time period in which the system will wait for appenders to flush before canceling the background task.
-        /// </summary>
-        public Double ShutdownFlushTimeout
-        {
-            get
-            {
-                return _shutdownFlushTimeout;
-            }
-            set
-            {
-                _shutdownFlushTimeout = value;
-            }
-        }
-
-        protected override string InternalLoggerName
-        {
-            get
-            {
-                {
-                    return "ParallelForwardingAppender";
-                }
-            }
-        }
-
-        #endregion Properties
-
-        #region Startup
-
-        public override void ActivateOptions()
-        {
-            base.ActivateOptions();
-            _shutdownFlushTimespan = TimeSpan.FromSeconds(_shutdownFlushTimeout);
-            StartForwarding();
-        }
-
-        private void StartForwarding()
-        {
-            if (shutDownRequested)
-            {
-                return;
-            }
-            //Create a collection which will block the thread and wait for new entries
-            //if the collection is empty
-            if (BufferSize.HasValue && BufferSize > 0)
-            {
-                _loggingEvents = new BlockingCollection<LoggingEventContext>(BufferSize.Value);
-            }
-            else
-            {
-                //No limit on the number of events.
-                _loggingEvents = new BlockingCollection<LoggingEventContext>();
-            }
-            //The cancellation token is used to cancel a running task gracefully.
-            _loggingCancelationTokenSource = new CancellationTokenSource();
-            _loggingCancelationToken = _loggingCancelationTokenSource.Token;
-            _loggingTask = new Task(SubscriberLoop, _loggingCancelationToken);
-            _loggingTask.Start();
-        }
-
-        #endregion Startup
-
-        #region Shutdown
-
-        private void CompleteSubscriberTask()
-        {
-            shutDownRequested = true;
-            if (_loggingEvents == null || _loggingEvents.IsAddingCompleted)
-            {
-                return;
-            }
-            //Don't allow more entries to be added.
-            _loggingEvents.CompleteAdding();
-            //Allow some time to flush
-            Thread.Sleep(_shutdownFlushTimespan);
-            if (!_loggingTask.IsCompleted && !_loggingCancelationToken.IsCancellationRequested)
-            {
-                _loggingCancelationTokenSource.Cancel();
-                //Wait here so that the error logging messages do not get into a random order.
-                //Don't pass the cancellation token because we are not interested
-                //in catching the OperationCanceledException that results.
-                _loggingTask.Wait();
-            }
-            if (!_loggingEvents.IsCompleted)
-            {
-                ForwardInternalError("The buffer was not able to be flushed before timeout occurred.", null, ThisType);
-            }
-        }
-
-        protected override void OnClose()
-        {
-            CompleteSubscriberTask();
-            base.OnClose();
-        }
-
-        #endregion Shutdown
-
-        #region Appending
-
-        protected override void Append(LoggingEvent loggingEvent)
-        {
-            if (_loggingEvents == null || _loggingEvents.IsAddingCompleted || loggingEvent == null)
-            {
-                return;
-            }
-
-            loggingEvent.Fix = Fix;
-            //In the case where blocking on a full collection, and the task is subsequently completed, the cancellation token
-            //will prevent the entry from attempting to add to the completed collection which would result in an exception.
-            _loggingEvents.Add(new LoggingEventContext(loggingEvent, HttpContext), _loggingCancelationToken);
-        }
-
-        protected override void Append(LoggingEvent[] loggingEvents)
-        {
-            if (_loggingEvents == null || _loggingEvents.IsAddingCompleted || loggingEvents == null)
-            {
-                return;
-            }
-
-            foreach (var loggingEvent in loggingEvents)
-            {
-                Append(loggingEvent);
-            }
-        }
-
-        #endregion Appending
-
-        #region Forwarding
-
-        /// <summary>
-        /// Iterates over a BlockingCollection containing LoggingEvents.
-        /// </summary>
-        private void SubscriberLoop()
-        {
-            Thread.CurrentThread.Name = String.Format("{0} ParallelForwardingAppender Subscriber Task", Name);
-            //The task will continue in a blocking loop until
-            //the queue is marked as adding completed, or the task is canceled.
-            try
-            {
-                //This call blocks until an item is available or until adding is completed
-                foreach (var entry in _loggingEvents.GetConsumingEnumerable(_loggingCancelationToken))
-                {
-                    HttpContext = entry.HttpContext;
-                    ForwardLoggingEvent(entry.LoggingEvent, ThisType);
-                }
-            }
-            catch (OperationCanceledException ex)
-            {
-                //The thread was canceled before all entries could be forwarded and the collection completed.
-                ForwardInternalError("Subscriber task was canceled before completion.", ex, ThisType);
-                //Cancellation is called in the CompleteSubscriberTask so don't call that again.
-            }
-            catch (ThreadAbortException ex)
-            {
-                //Thread abort may occur on domain unload.
-                ForwardInternalError("Subscriber task was aborted.", ex, ThisType);
-                //Cannot recover from a thread abort so complete the task.
-                CompleteSubscriberTask();
-                //The exception is swallowed because we don't want the client application
-                //to halt due to a logging issue.
-            }
-            catch (Exception ex)
-            {
-                //On exception, try to log the exception
-                ForwardInternalError("Subscriber task error in forwarding loop.", ex, ThisType);
-                //Any error in the loop is going to be some sort of extenuating circumstance from which we
-                //probably cannot recover anyway.   Complete subscribing.
-                CompleteSubscriberTask();
-            }
-        }
-
-        #endregion Forwarding
-
-        #region IDisposable Implementation
-
-        private bool _disposed = false;
-
-        //Implement IDisposable.
-        public void Dispose()
-        {
-            Dispose(true);
-            GC.SuppressFinalize(this);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
-            if (!_disposed)
-            {
-                if (disposing)
-                {
-                    if (_loggingTask != null)
-                    {
-                        if (!(_loggingTask.IsCanceled || _loggingTask.IsCompleted || _loggingTask.IsFaulted))
-                        {
-                            try
-                            {
-                                CompleteSubscriberTask();
-                            }
-                            catch (Exception ex)
-                            {
-                                LogLog.Error(ThisType, "Exception Completing Subscriber Task in Dispose Method", ex);
-                            }
-                        }
-                        try
-                        {
-                            _loggingTask.Dispose();
-                        }
-                        catch (Exception ex)
-                        {
-                            LogLog.Error(ThisType, "Exception Disposing Logging Task", ex);
-                        }
-                        finally
-                        {
-                            _loggingTask = null;
-                        }
-                    }
-                    if (_loggingEvents != null)
-                    {
-                        try
-                        {
-                            _loggingEvents.Dispose();
-                        }
-                        catch (Exception ex)
-                        {
-                            LogLog.Error(ThisType, "Exception Disposing BlockingCollection", ex);
-                        }
-                        finally
-                        {
-                            _loggingEvents = null;
-                        }
-                    }
-                    if (_loggingCancelationTokenSource != null)
-                    {
-                        try
-                        {
-                            _loggingCancelationTokenSource.Dispose();
-                        }
-                        catch (Exception ex)
-                        {
-                            LogLog.Error(ThisType, "Exception Disposing CancellationTokenSource", ex);
-                        }
-                        finally
-                        {
-                            _loggingCancelationTokenSource = null;
-                        }
-                    }
-                }
-                _disposed = true;
-            }
-        }
-
-        // Use C# destructor syntax for finalization code.
-        ~ParallelForwardingAppender()
-        {
-            // Simply call Dispose(false).
-            Dispose(false);
-        }
-
-        #endregion IDisposable Implementation
    }
 }
@@ -1,8 +1,14 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;

 namespace Umbraco.Core.Media
 {
-    public interface IImageUrlProvider
+    // note: because this interface is obsolete is is *not* IDiscoverable, and in case the
+    // PluginManager is asked to find types implementing this interface it will fall back
+    // to a complete scan.
+
+    [Obsolete("IImageUrlProvider is no longer used and will be removed in future versions")]
+    public interface IImageUrlProvider // IDiscoverable
    {
        string Name { get; }
        string GetImageUrlFromMedia(int mediaId, IDictionary<string, string> parameters);
@@ -1,6 +1,13 @@
-namespace Umbraco.Core.Media
+using System;
+
+namespace Umbraco.Core.Media
 {
-	public interface IThumbnailProvider
+    // note: because this interface is obsolete is is *not* IDiscoverable, and in case the
+    // PluginManager is asked to find types implementing this interface it will fall back
+    // to a complete scan.
+
+    [Obsolete("Thumbnails are generated by ImageProcessor, use that instead")]
+	public interface IThumbnailProvider  // : IDiscoverable
    {
        bool CanProvideThumbnail(string fileUrl);
        string GetThumbnailUrl(string fileUrl);
@@ -96,8 +96,7 @@ namespace Umbraco.Core.Media
        /// <param name="propertyTypeAlias">The property type alias.</param>
        /// <param name="filepath">The filesystem-relative filepath, or null to clear properties.</param>
        /// <param name="filestream">The stream containing the file data.</param>
-        /// <param name="image">The file data as an image object.</param>
-        public void Populate(IContentBase content, string propertyTypeAlias, string filepath, Stream filestream, Image image = null)
+        public void Populate(IContentBase content, string propertyTypeAlias, string filepath, Stream filestream)
        {
            if (content == null) throw new ArgumentNullException("content");
            if (propertyTypeAlias == null) throw new ArgumentNullException("propertyTypeAlias");
@@ -110,7 +109,7 @@ namespace Umbraco.Core.Media
            if (autoFillConfig == null) return; // nothing

            // populate
-            Populate(content, autoFillConfig, filepath, filestream, image);
+            Populate(content, autoFillConfig, filepath, filestream);
        }

        /// <summary>
@@ -158,8 +157,7 @@ namespace Umbraco.Core.Media
        /// <param name="autoFillConfig"></param>
        /// <param name="filepath">The filesystem-relative filepath, or null to clear properties.</param>
        /// <param name="filestream">The stream containing the file data.</param>
-        /// <param name="image">The file data as an image object.</param>
-        public void Populate(IContentBase content, IImagingAutoFillUploadField autoFillConfig, string filepath, Stream filestream, Image image = null)
+        public void Populate(IContentBase content, IImagingAutoFillUploadField autoFillConfig, string filepath, Stream filestream)
        {
            if (content == null) throw new ArgumentNullException("content");
            if (autoFillConfig == null) throw new ArgumentNullException("autoFillConfig");
@@ -172,11 +170,7 @@ namespace Umbraco.Core.Media
            else
            {
                var extension = (Path.GetExtension(filepath) ?? "").TrimStart('.');
-                Size? size;
-                if (image == null)
-                    size = _mediaFileSystem.IsImageFile(extension) ? (Size?) _mediaFileSystem.GetDimensions(filestream) : null;
-                else 
-                    size = new Size(image.Width, image.Height);
+                var size = _mediaFileSystem.IsImageFile(extension) ? (Size?)_mediaFileSystem.GetDimensions(filestream) : null;
                SetProperties(content, autoFillConfig, size, filestream.Length, extension);
            }
        }
@@ -42,6 +42,7 @@ namespace Umbraco.Core.Models
        public Guid Key { get; set; }
        public DateTime CreateDate { get; set; }
        public DateTime UpdateDate { get; set; }
+        public DateTime? DeletedDate { get; set; }

        /// <summary>
        /// Special case, always return false, this will cause the repositories managing 
@@ -60,5 +61,7 @@ namespace Umbraco.Core.Models
            DeepCloneHelper.DeepCloneRefProperties(this, clone);
            return clone;
        }
+
+        
    }
 }
@@ -101,6 +101,9 @@ namespace Umbraco.Core.Models.EntityBase
            set { SetPropertyValueAndDetectChanges(value, ref _updateDate, Ps.Value.UpdateDateSelector); }           
        }

+        [IgnoreDataMember]
+        public DateTime? DeletedDate { get; set; }
+
        internal virtual void ResetIdentity()
        {
            _hasIdentity = false;
@@ -3,7 +3,7 @@
    /// <summary>
    /// Marker interface for aggregate roots
    /// </summary>
-    public interface IAggregateRoot : IEntity
+    public interface IAggregateRoot : IDeletableEntity
    {
         
    }
@@ -0,0 +1,11 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace Umbraco.Core.Models.EntityBase
+{
+    public interface IDeletableEntity : IEntity
+    {
+        [DataMember]
+        DateTime? DeletedDate { get; set; }
+    }
+}
@@ -20,7 +20,7 @@ namespace Umbraco.Core.Models.EntityBase
        /// <summary>
        /// Guid based Id
        /// </summary>
-        /// <remarks>The key is currectly used to store the Unique Id from the 
+        /// <remarks>The key is currectly used to store the Unique Id from the
        /// umbracoNode table, which many of the entities are based on.</remarks>
        [DataMember]
        Guid Key { get; set; }
@@ -2,6 +2,6 @@
 {
    public interface IPartialView : IFile
    {
-        
+        PartialViewType ViewType { get; }
    }
 }
@@ -1,10 +1,8 @@
 using System;
 using System.Runtime.Serialization;
-using Umbraco.Core.Services;

 namespace Umbraco.Core.Models
 {
-  
    /// <summary>
    /// Represents a Partial View file
    /// </summary>
@@ -12,14 +10,21 @@ namespace Umbraco.Core.Models
    [DataContract(IsReference = true)]
    public class PartialView : File, IPartialView
    {
+        [Obsolete("Use the ctor that explicitely sets the view type.")]
        public PartialView(string path)
-            : this(path, null)
+            : this(PartialViewType.PartialView, path, null)
        { }

-        internal PartialView(string path, Func<File, string> getFileContent)
+        public PartialView(PartialViewType viewType, string path)
+            : this(viewType, path, null)
+        { }
+
+        internal PartialView(PartialViewType viewType, string path, Func<File, string> getFileContent)
            : base(path, getFileContent)
-        { }
+        {
+            ViewType = viewType;
+        }

-        internal PartialViewType ViewType { get; set; }
+        public PartialViewType ViewType { get; set; }
    }
 }
@@ -1,6 +1,6 @@
 namespace Umbraco.Core.Models
 {
-    internal enum PartialViewType : byte
+    public enum PartialViewType : byte
    {
        Unknown = 0, // default
        PartialView = 1,
@@ -63,49 +63,6 @@ namespace Umbraco.Core.ObjectResolution
 			}
 		}

-        // NOTE - the ugly code below exists only because of umbraco.BusinessLogic.Actions.Action.ReRegisterActionsAndHandlers
-        // which wants to re-register actions and handlers instead of properly restarting the application. Don't even think
-        // about using it for anything else. Also, while the backdoor is open, the resolution system is locked so nothing
-        // can work properly => deadlocks. Therefore, open the backdoor, do resolution changes EXCLUSIVELY, and close the door!
-
-        /// <summary>
-        /// Returns a disposable object that reprents dirty access to temporarily unfrozen resolution configuration.
-        /// </summary>
-        /// <remarks>
-        /// <para>Should not be used.</para>
-        /// <para>Should be used in a <c>using(Resolution.DirtyBackdoorToConfiguration) { ... }</c> mode.</para>
-        /// <para>Because we just lift the frozen state, and we don't actually re-freeze, the <c>Frozen</c> event does not trigger.</para>
-        /// </remarks>
-        internal static IDisposable DirtyBackdoorToConfiguration
-        {
-            get { return new DirtyBackdoor(); }
-        }
-
-        // keep the class here because it needs write-access to Resolution.IsFrozen
-        private class DirtyBackdoor : IDisposable
-        {
-
-            private readonly IDisposable _lock;
-            private readonly bool _frozen;
-
-            public DirtyBackdoor()
-            {
-                LogHelper.Debug(typeof(DirtyBackdoor), "Creating back door for resolution");
-
-                _lock = new WriteLock(ConfigurationLock);
-                _frozen = _isFrozen;
-                _isFrozen = false;
-            }
-
-            public void Dispose()
-            {
-                LogHelper.Debug(typeof(DirtyBackdoor), "Disposing back door for resolution");
-
-                _isFrozen = _frozen;
-                _lock.Dispose();
-            }
-        }
-
 		/// <summary>
 		/// Freezes resolution.
 		/// </summary>
@@ -11,7 +11,7 @@ namespace Umbraco.Core
    {
        private readonly bool _keepOldest;

-        public OrderedHashSet(bool keepOldest = true)
+        public OrderedHashSet(bool keepOldest = true) 
        {
            _keepOldest = keepOldest;
        }
@@ -2,11 +2,12 @@
 using System.Collections.Concurrent;
 using System.Linq.Expressions;
 using System.Reflection;
+using umbraco.interfaces;
 using Umbraco.Core.Persistence.SqlSyntax;

 namespace Umbraco.Core.Persistence.Mappers
 {
-    public abstract class BaseMapper
+    public abstract class BaseMapper : IDiscoverable
    {
        private readonly ISqlSyntaxProvider _sqlSyntax;

@@ -1,9 +1,11 @@
-namespace Umbraco.Core.Persistence.Migrations
+using umbraco.interfaces;
+
+namespace Umbraco.Core.Persistence.Migrations
 {
    /// <summary>
    /// Marker interface for database migrations
    /// </summary>
-    public interface IMigration
+    public interface IMigration : IDiscoverable
    {
        void Up();
        void Down();
@@ -23,7 +23,7 @@ namespace Umbraco.Core.Persistence.Migrations
            Logger = logger;
        }

-        public IMigrationContext Context { get; internal set; }
+        public IMigrationContext Context;

        public abstract void Up();
        public abstract void Down();
@@ -1,4 +1,5 @@
-using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column;
+using System;
+using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Expressions;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table;
 using Umbraco.Core.Persistence.SqlSyntax;
@@ -25,6 +26,15 @@ namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter
            return new AlterTableBuilder(_context, _databaseProviders, expression);
        }

+        /// <summary>
+        /// The problem with this is that only under particular circumstances is the expression added to the context
+        /// so you wouldn't actually know if you are using it correctly or not and chances are you are not and therefore
+        /// the statement won't even execute whereas using the IAlterTableSyntax to modify a column is guaranteed to add
+        /// the expression to the context.
+        /// </summary>
+        /// <param name="columnName"></param>
+        /// <returns></returns>
+        [Obsolete("Use the IAlterTableSyntax to modify a column instead, this will be removed in future versions")]
        public IAlterColumnSyntax Column(string columnName)
        {
            var expression = new AlterColumnExpression(_context.CurrentDatabaseProvider, _databaseProviders, _sqlSyntax) {Column = {Name = columnName}};
@@ -1,11 +1,22 @@
-using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column;
+using System;
+using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Column;
 using Umbraco.Core.Persistence.Migrations.Syntax.Alter.Table;

 namespace Umbraco.Core.Persistence.Migrations.Syntax.Alter
 {
    public interface IAlterSyntaxBuilder : IFluentSyntax
    {
-        IAlterTableSyntax Table(string tableName);
+        IAlterTableSyntax Table(string tableName);
+
+        /// <summary>
+        /// The problem with this is that only under particular circumstances is the expression added to the context
+        /// so you wouldn't actually know if you are using it correctly or not and chances are you are not and therefore
+        /// the statement won't even execute whereas using the IAlterTableSyntax to modify a column is guaranteed to add
+        /// the expression to the context.
+        /// </summary>
+        /// <param name="columnName"></param>
+        /// <returns></returns>
+        [Obsolete("Use the IAlterTableSyntax to modify a column instead, this will be removed in future versions")]
        IAlterColumnSyntax Column(string columnName);
    }
 }
@@ -4,7 +4,7 @@ using Umbraco.Core.Persistence.SqlSyntax;

 namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
 {
-    [Migration("7.6.0", 0, Constants.System.UmbracoMigrationName)]
+    [Migration("7.6.0", 3, Constants.System.UmbracoMigrationName)]
    public class AddIndexToCmsMemberLoginName : MigrationBase
    {
        public AddIndexToCmsMemberLoginName(ISqlSyntaxProvider sqlSyntax, ILogger logger)
@@ -12,18 +12,43 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
        { }

        public override void Up()
-        {
-            var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
-
-            //make sure it doesn't already exist
-            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsMember_LoginName")) == false)
+        {   
+            Execute.Code(database =>
            {
-                Create.Index("IX_cmsMember_LoginName").OnTable("cmsMember")
-                    .OnColumn("LoginName")
-                    .Ascending()
-                    .WithOptions()
-                    .NonClustered();
-            }
+                //Now we need to check if we can actually d6 this because we won't be able to if there's data in there that is too long
+                //http://issues.umbraco.org/issue/U4-9758
+
+                var colLen = (SqlSyntax is MySqlSyntaxProvider)
+                    ? database.ExecuteScalar<int?>("select max(LENGTH(LoginName)) from cmsMember")
+                    : database.ExecuteScalar<int?>("select max(datalength(LoginName)) from cmsMember");
+
+                if (colLen < 900 == false && colLen != null)
+                {
+                    return null;
+                }
+
+                var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(Context.Database);
+
+                //make sure it doesn't already exist
+                if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsMember_LoginName")) == false)
+                {
+                    var localContext = new LocalMigrationContext(Context.CurrentDatabaseProvider, database, SqlSyntax, Logger);
+
+                    //we can apply the index
+                    localContext.Create.Index("IX_cmsMember_LoginName").OnTable("cmsMember")
+                        .OnColumn("LoginName")
+                        .Ascending()
+                        .WithOptions()
+                        .NonClustered();
+
+                    return localContext.GetSql();
+                }
+
+                return null;
+
+            });
+
+            
        }

        public override void Down()
@@ -1,11 +1,10 @@
-using Umbraco.Core.Configuration;
-using Umbraco.Core.Logging;
+using Umbraco.Core.Logging;
 using Umbraco.Core.Models.Rdbms;
 using Umbraco.Core.Persistence.SqlSyntax;

-namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenFiveFive
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
 {
-    [Migration("7.5.5", 101, Constants.System.UmbracoMigrationName)]
+    [Migration("7.6.0", 101, Constants.System.UmbracoMigrationName)]
    public class AddLockObjects : MigrationBase
    {
        public AddLockObjects(ISqlSyntaxProvider sqlSyntax, ILogger logger)
@@ -1,11 +1,10 @@
 using System.Linq;
-using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Persistence.SqlSyntax;

-namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenFiveFive
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
 {
-    [Migration("7.5.5", 100, Constants.System.UmbracoMigrationName)]
+    [Migration("7.6.0", 100, Constants.System.UmbracoMigrationName)]
    public class AddLockTable : MigrationBase
    {
        public AddLockTable(ISqlSyntaxProvider sqlSyntax, ILogger logger)
@@ -0,0 +1,50 @@
+using System;
+using System.Linq;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
+{
+    [Migration("7.6.0", 0, Constants.System.UmbracoMigrationName)]
+    public class NormalizeTemplateGuids : MigrationBase
+    {
+        public NormalizeTemplateGuids(ISqlSyntaxProvider sqlSyntax, ILogger logger)
+            : base(sqlSyntax, logger)
+        { }
+
+        public override void Up()
+        {
+            Execute.Code(UpdateTemplateGuids);
+        }
+
+        private static string UpdateTemplateGuids(Database database)
+        {
+            // we need this migration because ppl running pre-7.6 on Cloud and Courier have templates in different
+            // environments having different GUIDs (Courier does not sync template GUIDs) and we need to normalize
+            // these GUIDs so templates with the same alias on different environments have the same GUID.
+            // however, if already running a prerelease version of 7.6, we do NOT want to normalize the GUIDs as quite
+            // probably, we are already running Deploy and the GUIDs are OK. assuming noone is running a prerelease
+            // of 7.6 on Courier.
+            // so... testing if we already have a 7.6.0 version installed. not pretty but...?
+            //
+            var version = database.FirstOrDefault<string>("SELECT version FROM umbracoMigration WHERE name=@name ORDER BY version DESC", new { name = Constants.System.UmbracoMigrationName });
+            if (version != null && version.StartsWith("7.6.0")) return string.Empty;
+
+            var updates = database.Query<dynamic>(@"SELECT umbracoNode.id, cmsTemplate.alias FROM umbracoNode 
+JOIN cmsTemplate ON umbracoNode.id=cmsTemplate.nodeId
+WHERE nodeObjectType = @guid", new { guid = Constants.ObjectTypes.TemplateTypeGuid})
+                .Select(template => Tuple.Create((int) template.id, ("template____" + (string) template.alias).ToGuid()))
+                .ToList();
+
+            foreach (var update in updates)
+                database.Execute("UPDATE umbracoNode set uniqueId=@guid WHERE id=@id", new { guid = update.Item2, id = update.Item1 });
+
+            return string.Empty;
+        }
+
+        public override void Down()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
@@ -0,0 +1,52 @@
+using System.Linq;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Persistence.SqlSyntax;
+
+namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenSixZero
+{
+    [Migration("7.6.0", 2, Constants.System.UmbracoMigrationName)]
+    public class ReduceLoginNameColumnsSize : MigrationBase
+    {
+        public ReduceLoginNameColumnsSize(ISqlSyntaxProvider sqlSyntax, ILogger logger)
+            : base(sqlSyntax, logger)
+        { }
+
+        public override void Up()
+        {
+            //Now we need to check if we can actually d6 this because we won't be able to if there's data in there that is too long
+            //http://issues.umbraco.org/issue/U4-9758
+
+            Execute.Code(database =>
+            {
+                var dbIndexes = SqlSyntax.GetDefinedIndexesDefinitions(database);
+
+                var colLen = (SqlSyntax is MySqlSyntaxProvider)
+                    ? database.ExecuteScalar<int?>("select max(LENGTH(LoginName)) from cmsMember")
+                    : database.ExecuteScalar<int?>("select max(datalength(LoginName)) from cmsMember");
+
+                if (colLen < 900 == false) return null;
+                
+                var localContext = new LocalMigrationContext(Context.CurrentDatabaseProvider, database, SqlSyntax, Logger);
+
+                //if it exists we need to drop it first
+                if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_cmsMember_LoginName")))
+                {
+                    localContext.Delete.Index("IX_cmsMember_LoginName").OnTable("cmsMember");
+                }
+
+                //we can apply the col length change
+                localContext.Alter.Table("cmsMember")
+                    .AlterColumn("LoginName")
+                    .AsString(225)
+                    .NotNullable();
+
+                return localContext.GetSql();
+            });
+        }
+
+        public override void Down()
+        {
+            
+        }
+    }
+}
@@ -2,6 +2,7 @@
 using Umbraco.Core.Configuration;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Models.Rdbms;
+using Umbraco.Core.Persistence.DatabaseAnnotations;
 using Umbraco.Core.Persistence.SqlSyntax;

 namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZero
@@ -16,7 +17,7 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe

        public override void Up()
        {
-            var exists = Context.Database.FirstOrDefault<RelationTypeDto>("WHERE alias=@alias", new {alias = Constants.Conventions.RelationTypes.RelateParentDocumentOnDeleteAlias});
+            var exists = Context.Database.FirstOrDefault<RelationTypeDtoCapture>("WHERE alias=@alias", new {alias = Constants.Conventions.RelationTypes.RelateParentDocumentOnDeleteAlias});
            if (exists == null)
            {
                Insert.IntoTable("umbracoRelationType").Row(new
@@ -28,13 +29,42 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
                    alias = Constants.Conventions.RelationTypes.RelateParentDocumentOnDeleteAlias
                });
            }
-
-            
-
        }

        public override void Down()
+        { }
+
+        // need to capture the DTO as it is modified in later migrations
+
+        [TableName("umbracoRelationType")]
+        [PrimaryKey("id")]
+        [ExplicitColumns]
+        internal class RelationTypeDtoCapture
        {
+            public const int NodeIdSeed = 3;
+
+            [Column("id")]
+            [PrimaryKeyColumn(IdentitySeed = NodeIdSeed)]
+            public int Id { get; set; }
+
+            [Column("dual")]
+            public bool Dual { get; set; }
+
+            [Column("parentObjectType")]
+            public Guid ParentObjectType { get; set; }
+
+            [Column("childObjectType")]
+            public Guid ChildObjectType { get; set; }
+
+            [Column("name")]
+            [Index(IndexTypes.UniqueNonClustered, Name = "IX_umbracoRelationType_name")]
+            public string Name { get; set; }
+
+            [Column("alias")]
+            [NullSetting(NullSetting = NullSettings.Null)]
+            [Length(100)]
+            [Index(IndexTypes.UniqueNonClustered, Name = "IX_umbracoRelationType_alias")]
+            public string Alias { get; set; }
        }
    }
 }
@@ -29,7 +29,7 @@ namespace Umbraco.Core.Persistence.Migrations.Upgrades.TargetVersionSevenThreeZe
                }).ToArray();

            //must be non-nullable
-            Alter.Column("uniqueID").OnTable("umbracoNode").AsGuid().NotNullable();
+            Alter.Table("umbracoNode").AlterColumn("uniqueID").AsGuid().NotNullable();

            //make sure it already exists
            if (dbIndexes.Any(x => x.IndexName.InvariantEquals("IX_umbracoNodeUniqueID")))
@@ -70,6 +70,8 @@ namespace Umbraco.Core.Persistence.Repositories
        {
            //Remove 'published' xml from the cmsContentXml table for the unpublished content
            Database.Delete<ContentXmlDto>("WHERE nodeId = @Id", new { Id = entity.Id });
+
+            entity.DeletedDate = DateTime.Now;
        }

        protected override void PersistNewItem(ContentXmlEntity<TContent> entity)
@@ -270,6 +270,8 @@ AND umbracoNode.id <> @id",

            //Delete (base) node data
            Database.Delete<NodeDto>("WHERE uniqueID = @Id", new { Id = entity.Key });
+
+            entity.DeletedDate = DateTime.Now;
        }

        #endregion
@@ -539,6 +541,8 @@ AND umbracoNode.id <> @id",
                Database.Execute(
                    "DELETE FROM cmsDataTypePreValues WHERE id=@Id",
                    new { Id = entity.Id });
+
+                entity.DeletedDate = DateTime.Now;
            }

            protected override void PersistNewItem(PreValueEntity entity)
@@ -195,6 +195,8 @@ namespace Umbraco.Core.Persistence.Repositories
            //Clear the cache entries that exist by uniqueid/item key
            IsolatedCache.ClearCacheItem(GetCacheIdKey<IDictionaryItem>(entity.ItemKey));
            IsolatedCache.ClearCacheItem(GetCacheIdKey<IDictionaryItem>(entity.Key));
+
+            entity.DeletedDate = DateTime.Now;
        }

        private void RecursiveDelete(Guid parentId)
@@ -167,6 +167,8 @@ namespace Umbraco.Core.Persistence.Repositories

            // delete
            Database.Delete(nodeDto);
+
+            entity.DeletedDate = DateTime.Now;
        }

        protected override void PersistNewItem(EntityContainer entity)
@@ -30,7 +30,7 @@ namespace Umbraco.Core.Persistence.Repositories
            var updated = FileSystem.GetLastModified(path).UtcDateTime;
            //var content = GetFileContent(path);

-            var view = new PartialView(path, file => GetFileContent(file.OriginalPath))
+            var view = new PartialView(ViewType, path, file => GetFileContent(file.OriginalPath))
            {
                //id can be the hash
                Id = path.GetHashCode(),
@@ -38,8 +38,7 @@ namespace Umbraco.Core.Persistence.Repositories
                //Content = content,
                CreateDate = created,
                UpdateDate = updated,
-                VirtualPath = FileSystem.GetUrl(id),
-                ViewType = ViewType
+                VirtualPath = FileSystem.GetUrl(id)
            };

            //on initial construction we don't want to have dirty properties tracked
@@ -74,6 +74,7 @@ namespace Umbraco.Core.Persistence.Repositories
            {
                Database.Execute(delete, new { Id = GetEntityId(entity) });
            }
+            entity.DeletedDate = DateTime.Now;
        }
    }
 }
@@ -132,6 +132,11 @@ namespace Umbraco.Core.Persistence.Repositories

            Database.Update(dto);

+            foreach (var removedRule in entity.RemovedRules)
+            {
+                Database.Delete<AccessRuleDto>("WHERE id=@Id", new { Id = removedRule });
+            }
+
            foreach (var rule in entity.Rules)
            {
                if (rule.HasIdentity)
@@ -157,10 +162,6 @@ namespace Umbraco.Core.Persistence.Repositories
                    rule.Id = rule.Key.GetHashCode();
                }
            }
-            foreach (var removedRule in entity.RemovedRules)
-            {
-                Database.Delete<AccessRuleDto>("WHERE id=@Id", new {Id = removedRule});
-            }

            entity.ClearRemovedRules();

@@ -311,6 +311,8 @@ namespace Umbraco.Core.Persistence.Repositories
                var masterpageName = string.Concat(entity.Alias, ".master");
                _masterpagesFileSystem.DeleteFile(masterpageName);
            }
+
+            entity.DeletedDate = DateTime.Now;
        }

        #endregion
@@ -8,5 +8,6 @@ namespace Umbraco.Core.Persistence.UnitOfWork
        IScope Scope { get; }
        EventMessages Messages { get; }
        IEventDispatcher Events { get; }
+        void Flush();
    }
 }
@@ -160,7 +160,33 @@ namespace Umbraco.Core.Persistence.UnitOfWork
            _key = Guid.NewGuid();
        }

-		public object Key
+        public void Flush()
+        {
+            if (_readOnly)
+                throw new NotSupportedException("This unit of work is read-only.");
+
+            while (_operations.Count > 0)
+            {
+                var operation = _operations.Dequeue();
+                switch (operation.Type)
+                {
+                    case TransactionType.Insert:
+                        operation.Repository.PersistNewItem(operation.Entity);
+                        break;
+                    case TransactionType.Delete:
+                        operation.Repository.PersistDeletedItem(operation.Entity);
+                        break;
+                    case TransactionType.Update:
+                        operation.Repository.PersistUpdatedItem(operation.Entity);
+                        break;
+                }
+            }
+
+            _operations.Clear();
+            _key = Guid.NewGuid();
+        }
+
+        public object Key
 		{
 			get { return _key; }
 		}
@@ -1,8 +1,9 @@
 using System.Collections.Generic;
+using umbraco.interfaces;

 namespace Umbraco.Core.PropertyEditors
 {
-    public interface IParameterEditor
+    public interface IParameterEditor : IDiscoverable
    {
        /// <summary>
        /// The id  of the property editor
@@ -1,4 +1,5 @@
 using System;
+using umbraco.interfaces;

 namespace Umbraco.Core.PropertyEditors
 {
@@ -7,8 +8,8 @@ namespace Umbraco.Core.PropertyEditors
    /// </summary>
    // todo: drop IPropertyEditorValueConverter support (when?).
    [Obsolete("Use IPropertyValueConverter.")]
-    public interface IPropertyEditorValueConverter
-	{
+    public interface IPropertyEditorValueConverter : IDiscoverable
+    {
 		/// <summary>
 		/// Returns a value indicating whether this provider applies to the specified property.
 		/// </summary>
@@ -1,11 +1,12 @@
-using Umbraco.Core.Models.PublishedContent;
+using umbraco.interfaces;
+using Umbraco.Core.Models.PublishedContent;

 namespace Umbraco.Core.PropertyEditors
 {
    /// <summary>
    /// Provides published content properties conversion service.
    /// </summary>
-    public interface IPropertyValueConverter
+    public interface IPropertyValueConverter : IDiscoverable
    {
        /// <summary>
        /// Gets a value indicating whether the converter supports a property type.
@@ -14,13 +14,13 @@ namespace Umbraco.Core.PropertyEditors
    /// </summary>
    /// <remarks>
    /// This resolver will contain any parameter editors defined in manifests as well as any property editors defined in manifests
-    /// that have the IsParameterEditorFlag = true and any PropertyEditors found in c# that have this flag as well. 
+    /// that have the IsParameterEditorFlag = true and any PropertyEditors found in c# that have this flag as well.
    /// </remarks>
    internal class ParameterEditorResolver : LazyManyObjectsResolverBase<ParameterEditorResolver, IParameterEditor>
    {
        private readonly ManifestBuilder _builder;
        private readonly IContentSection _contentSection;
-        
+
        public ParameterEditorResolver(IServiceProvider serviceProvider, ILogger logger, Func<IEnumerable<Type>> typeListProducerList, ManifestBuilder builder)
            : base(serviceProvider, logger, typeListProducerList, ObjectLifetimeScope.Application)
        {
@@ -33,47 +33,51 @@ namespace Umbraco.Core.PropertyEditors
        /// </summary>
        public IEnumerable<IParameterEditor> ParameterEditors
        {
-            get
+            get { return GetParameterEditors(); }
+        }
+
+        public IEnumerable<IParameterEditor> GetParameterEditors(bool includeDeprecated = false)
+        {
+            // all property editors and parameter editors
+            // except property editors where !IsParameterEditor
+            var values = Values
+                .Where(x => x is PropertyEditor == false || ((PropertyEditor) x).IsParameterEditor);
+
+            // union all manifest parameter editors
+            values = values
+                .Union(_builder.ParameterEditors);
+
+            // union all manifest property editors where IsParameterEditor
+            values = values
+                .Union(_builder.PropertyEditors.Where(x => x.IsParameterEditor));
+
+            if (includeDeprecated == false && _contentSection.ShowDeprecatedPropertyEditors == false)
            {
-                // all property editors and parameter editors
-                // except property editors where !IsParameterEditor
-                var values = Values
-                    .Where(x => x is PropertyEditor == false || ((PropertyEditor) x).IsParameterEditor);
-
-                // union all manifest parameter editors
+                // except deprecated property editors
                values = values
-                    .Union(_builder.ParameterEditors);
-
-                // union all manifest property editors where IsParameterEditor
-                values = values
-                    .Union(_builder.PropertyEditors.Where(x => x.IsParameterEditor));
-
-                if (_contentSection.ShowDeprecatedPropertyEditors == false)
-                {
-                    // except deprecated property editors
-                    values = values
-                        .Where(x => x is PropertyEditor == false || ((PropertyEditor) x).IsDeprecated == false);
-                }
-
-                return values;
+                    .Where(x => x is PropertyEditor == false || ((PropertyEditor) x).IsDeprecated == false);
            }
+
+            return values;
        }

        /// <summary>
        /// Returns a property editor by alias
        /// </summary>
        /// <param name="alias"></param>
+        /// <param name="includeDeprecated"></param>
        /// <returns></returns>
-        public IParameterEditor GetByAlias(string alias)
+        public IParameterEditor GetByAlias(string alias, bool includeDeprecated = false)
        {
-            var found = ParameterEditors.SingleOrDefault(x => x.Alias == alias);
+            var paramEditors = GetParameterEditors(includeDeprecated).ToArray();
+            var found = paramEditors.SingleOrDefault(x => x.Alias == alias);
            if (found != null) return found;
-            
+
            //couldn't find one, so try the map
            var mapped = LegacyParameterEditorAliasConverter.GetNewAliasFromLegacyAlias(alias);
-            return mapped == null 
-                ? null 
-                : ParameterEditors.SingleOrDefault(x => x.Alias == mapped);
+            return mapped == null
+                ? null
+                : paramEditors.SingleOrDefault(x => x.Alias == mapped);
        }
    }
 }
@@ -20,6 +20,11 @@ namespace Umbraco.Core.PropertyEditors.ValueConverters

        public override object ConvertSourceToObject(PublishedPropertyType propertyType, object source, bool preview)
        {
+            if(source == null) 
+            {
+                return string.Empty;
+            }
+            
            return source.ToString();
        }
        
@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using Umbraco.Core.Logging;
 using Umbraco.Core.Models;
 using Umbraco.Core.Services;
@@ -26,12 +27,16 @@ namespace Umbraco.Core.Publishing
        public int CheckPendingAndProcess()
        {
            var counter = 0;
-            foreach (var d in _contentService.GetContentForRelease())
+            var contentForRelease = _contentService.GetContentForRelease().ToArray();
+            if (contentForRelease.Length > 0)
+                LogHelper.Debug<ScheduledPublisher>(string.Format("There's {0} item(s) of content to be published", contentForRelease.Length));
+            foreach (var d in contentForRelease)
            {
                try
                {
                    d.ReleaseDate = null;
                    var result = _contentService.SaveAndPublishWithStatus(d, (int)d.GetWriterProfile().Id);
+                    LogHelper.Debug<ContentService>(string.Format("Result of publish attempt: {0}", result.Result.StatusType));
                    if (result.Success == false)
                    {
                        if (result.Exception != null)
@@ -54,7 +59,11 @@ namespace Umbraco.Core.Publishing
                    throw;
                }
            }
-            foreach (var d in _contentService.GetContentForExpiration())
+
+            var contentForExpiration = _contentService.GetContentForExpiration().ToArray();
+            if (contentForExpiration.Length > 0)
+                LogHelper.Debug<ScheduledPublisher>(string.Format("There's {0} item(s) of content to be unpublished", contentForExpiration.Length));
+            foreach (var d in contentForExpiration)
            {
                try
                {
@@ -465,6 +465,7 @@ namespace Umbraco.Core.Scoping
                    }
                    finally
                    {
+                        // removes the ambient context (ambient scope already gone)
                        _scopeProvider.SetAmbient(null);
                    }
                }
@@ -1,16 +1,23 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;

 namespace Umbraco.Core.Scoping
 {
    public class ScopeContext : IInstanceIdentifiable
    {
        private Dictionary<string, IEnlistedObject> _enlisted;
+        private bool _exiting;

        public void ScopeExit(bool completed)
        {
+            if (_enlisted == null)
+                return;
+
+            _exiting = true;
+
            List<Exception> exceptions = null;
-            foreach (var enlisted in Enlisted.Values)
+            foreach (var enlisted in _enlisted.Values.OrderBy(x => x.Priority))
            {
                try
                {
@@ -23,6 +30,7 @@ namespace Umbraco.Core.Scoping
                    exceptions.Add(e);
                }
            }
+
            if (exceptions != null)
                throw new AggregateException("Exceptions were thrown by listed actions.", exceptions);
        }
@@ -42,73 +50,71 @@ namespace Umbraco.Core.Scoping
        private interface IEnlistedObject
        {
            void Execute(bool completed);
+            int Priority { get; }
        }

        private class EnlistedObject<T> : IEnlistedObject
        {
            private readonly Action<bool, T> _action;

-            public EnlistedObject(T item)
-            {
-                Item = item;
-            }
-
-            public EnlistedObject(T item, Action<bool, T> action)
+            public EnlistedObject(T item, Action<bool, T> action, int priority)
            {
                Item = item;
+                Priority = priority;
                _action = action;
            }

            public T Item { get; private set; }

+            public int Priority { get; private set; }
+
            public void Execute(bool completed)
            {
                _action(completed, Item);
            }
        }

-        /// <inheritdoc />
+        // todo: replace with optional parameters when we can break things
        public T Enlist<T>(string key, Func<T> creator)
        {
-            IEnlistedObject enlisted;
-            if (Enlisted.TryGetValue(key, out enlisted))
-            {
-                var enlistedAs = enlisted as EnlistedObject<T>;
-                if (enlistedAs == null) throw new Exception("An item with a different type has already been enlisted with the same key.");
-                return enlistedAs.Item;
-            }
-            var enlistedOfT = new EnlistedObject<T>(creator());
-            Enlisted[key] = enlistedOfT;
-            return enlistedOfT.Item;
+            return Enlist(key, creator, null, 100);
        }

-        /// <inheritdoc />
+        // todo: replace with optional parameters when we can break things
        public T Enlist<T>(string key, Func<T> creator, Action<bool, T> action)
        {
-            IEnlistedObject enlisted;
-            if (Enlisted.TryGetValue(key, out enlisted))
-            {
-                var enlistedAs = enlisted as EnlistedObject<T>;
-                if (enlistedAs == null) throw new Exception("An item with a different type has already been enlisted with the same key.");
-                return enlistedAs.Item;
-            }
-            var enlistedOfT = new EnlistedObject<T>(creator(), action);
-            Enlisted[key] = enlistedOfT;
-            return enlistedOfT.Item;
+            return Enlist(key, creator, action, 100);
        }

-        /// <inheritdoc />
+        // todo: replace with optional parameters when we can break things
        public void Enlist(string key, Action<bool> action)
        {
+            Enlist<object>(key, null, (completed, item) => action(completed), 100);
+        }
+
+        public void Enlist(string key, Action<bool> action, int priority)
+        {
+            Enlist<object>(key, null, (completed, item) => action(completed), priority);
+        }
+
+        public T Enlist<T>(string key, Func<T> creator, Action<bool, T> action, int priority)
+        {
+            if (_exiting)
+                throw new InvalidOperationException("Cannot enlist now, context is exiting.");
+
+            var enlistedObjects = _enlisted ?? (_enlisted = new Dictionary<string, IEnlistedObject>());
+
            IEnlistedObject enlisted;
-            if (Enlisted.TryGetValue(key, out enlisted))
+            if (enlistedObjects.TryGetValue(key, out enlisted))
            {
-                var enlistedAs = enlisted as EnlistedObject<object>;
-                if (enlistedAs == null) throw new Exception("An item with a different type has already been enlisted with the same key.");
-                return;
+                var enlistedAs = enlisted as EnlistedObject<T>;
+                if (enlistedAs == null) throw new InvalidOperationException("An item with the key already exists, but with a different type.");
+                if (enlistedAs.Priority != priority) throw new InvalidOperationException("An item with the key already exits, but with a different priority.");
+                return enlistedAs.Item;
            }
-            var enlistedOfT = new EnlistedObject<object>(null, (completed, item) => action(completed));
+            var enlistedOfT = new EnlistedObject<T>(creator == null ? default(T) : creator(), action, priority);
            Enlisted[key] = enlistedOfT;
+            return enlistedOfT.Item;
        }
    }
 }
@@ -80,7 +80,41 @@ namespace Umbraco.Core.Security

            return false;
        }
+
+        /// <summary>
+        /// This will return the current back office identity if the IPrincipal is the correct type
+        /// </summary>
+        /// <param name="user"></param>
+        /// <returns></returns>
+        internal static UmbracoBackOfficeIdentity GetUmbracoIdentity(this IPrincipal user)
+        {
+            //If it's already a UmbracoBackOfficeIdentity
+            var backOfficeIdentity = user.Identity as UmbracoBackOfficeIdentity;
+            if (backOfficeIdentity != null) return backOfficeIdentity;

+            //Check if there's more than one identity assigned and see if it's a UmbracoBackOfficeIdentity and use that
+            var claimsPrincipal = user as ClaimsPrincipal;
+            if (claimsPrincipal != null)
+            {
+                backOfficeIdentity = claimsPrincipal.Identities.OfType<UmbracoBackOfficeIdentity>().FirstOrDefault();
+                if (backOfficeIdentity != null) return backOfficeIdentity;
+            }
+
+            //Otherwise convert to a UmbracoBackOfficeIdentity if it's auth'd and has the back office session            
+            var claimsIdentity = user.Identity as ClaimsIdentity;
+            if (claimsIdentity != null && claimsIdentity.IsAuthenticated && claimsIdentity.HasClaim(x => x.Type == Constants.Security.SessionIdClaimType))
+            {
+                try
+                {
+                    return UmbracoBackOfficeIdentity.FromClaimsIdentity(claimsIdentity);
+                }
+                catch (InvalidOperationException)
+                {                    
+                }
+            }
+
+            return null;
+        }

        /// <summary>
        /// This will return the current back office identity. 
@@ -100,31 +134,8 @@ namespace Umbraco.Core.Security
            if (http.User == null) return null; //there's no user at all so no identity

            //If it's already a UmbracoBackOfficeIdentity
-            var backOfficeIdentity = http.User.Identity as UmbracoBackOfficeIdentity;
-            if (backOfficeIdentity != null) return backOfficeIdentity;
-
-            //Check if there's more than one identity assigned and see if it's a UmbracoBackOfficeIdentity and use that
-            var claimsPrincipal = http.User as ClaimsPrincipal;
-            if (claimsPrincipal != null)
-            {
-                backOfficeIdentity = claimsPrincipal.Identities.OfType<UmbracoBackOfficeIdentity>().FirstOrDefault();
-                if (backOfficeIdentity != null) return backOfficeIdentity;
-            }
-
-            //Otherwise convert to a UmbracoBackOfficeIdentity if it's auth'd and has the back office session            
-            var claimsIdentity = http.User.Identity as ClaimsIdentity;
-            if (claimsIdentity != null && claimsIdentity.IsAuthenticated && claimsIdentity.HasClaim(x => x.Type == Constants.Security.SessionIdClaimType))
-            {                 
-                try
-                {
-                    return UmbracoBackOfficeIdentity.FromClaimsIdentity(claimsIdentity);
-                }
-                catch (InvalidOperationException ex)
-                {
-                    //This will occur if the required claim types are missing which would mean something strange is going on
-                    LogHelper.Error(typeof(AuthenticationExtensions), "The current identity cannot be converted to " + typeof(UmbracoBackOfficeIdentity), ex);
-                }
-            }
+            var backOfficeIdentity = GetUmbracoIdentity(http.User);
+            if (backOfficeIdentity != null) return backOfficeIdentity;            

            if (authenticateRequestIfNotFound == false) return null;

@@ -191,6 +191,7 @@ namespace Umbraco.Core.Security

            //track the last login date
            user.LastLoginDateUtc = DateTime.UtcNow;
+            user.AccessFailedCount = 0;
            await UserManager.UpdateAsync(user);

            _logger.WriteCore(TraceEventType.Information, 0,
@@ -231,4 +232,4 @@ namespace Umbraco.Core.Security
            return null;
        }
    }
-}
+}
@@ -9,6 +9,7 @@ using System.Web.Configuration;
 using System.Web.Hosting;
 using System.Web.Security;
 using Umbraco.Core.Logging;
+using Umbraco.Core.Models;

 namespace Umbraco.Core.Security
 {
@@ -520,7 +521,11 @@ namespace Umbraco.Core.Security

        public override string ResetPassword(string username, string answer)
        {
-            if (EnablePasswordReset == false)
+            var userService = ApplicationContext.Current == null ? null : ApplicationContext.Current.Services.UserService;
+
+            var canReset = this.CanResetPassword(userService);                
+
+            if (canReset == false)
            {
                throw new NotSupportedException("Password reset is not supported");
            }
@@ -9,12 +9,45 @@ using System.Web;
 using System.Web.Hosting;
 using System.Web.Security;
 using Umbraco.Core.Configuration;
+using Umbraco.Core.Models;
 using Umbraco.Core.Security;
+using Umbraco.Core.Services;

 namespace Umbraco.Core.Security
 {
    public static class MembershipProviderExtensions
    {
+        /// <summary>
+        /// Extension method to check if a password can be reset based on a given provider and the current request (logged in user)
+        /// </summary>
+        /// <param name="provider"></param>
+        /// <param name="userService"></param>
+        /// <returns></returns>
+        internal static bool CanResetPassword(this MembershipProvider provider, IUserService userService)
+        {
+            if (provider == null) throw new ArgumentNullException("provider");
+            
+            var canReset = provider.EnablePasswordReset;
+
+            if (userService == null) return canReset;
+
+            //we need to check for the special case in which a user is an admin - in which acse they can reset the password even if EnablePasswordReset == false
+            if (provider.EnablePasswordReset == false)
+            {
+                var identity = Thread.CurrentPrincipal.GetUmbracoIdentity();
+                if (identity != null)
+                {
+                    var user = userService.GetByUsername(identity.Username);
+                    var userIsAdmin = user.IsAdmin();
+                    if (userIsAdmin)
+                    {
+                        canReset = true;
+                    }
+                }
+            }
+            return canReset;
+        }
+
        internal static MembershipUserCollection FindUsersByName(this MembershipProvider provider, string usernameToMatch)
        {
            int totalRecords = 0;
@@ -1124,7 +1124,9 @@ namespace Umbraco.Core.Services
        /// <returns>True if unpublishing succeeded, otherwise False</returns>
        public bool UnPublish(IContent content, int userId = 0)
        {
-            return ((IContentServiceOperations)this).UnPublish(content, userId).Success;
+            var attempt = ((IContentServiceOperations)this).UnPublish(content, userId);
+            LogHelper.Debug<ContentService>(string.Format("Result of unpublish attempt: {0}", attempt.Result.StatusType));
+            return attempt.Success;
        }

        /// <summary>
@@ -19,14 +19,15 @@ namespace Umbraco.Core.Services
    /// </summary>
    public class ContentTypeService : ContentTypeServiceBase, IContentTypeService
    {
-	    private readonly IContentService _contentService;
+        private readonly IContentService _contentService;
        private readonly IMediaService _mediaService;

        //Support recursive locks because some of the methods that require locking call other methods that require locking.
        //for example, the Move method needs to be locked but this calls the Save method which also needs to be locked.
        private static readonly ReaderWriterLockSlim Locker = new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);

-        public ContentTypeService(IDatabaseUnitOfWorkProvider provider, RepositoryFactory repositoryFactory, ILogger logger, IEventMessagesFactory eventMessagesFactory, IContentService contentService, IMediaService mediaService)
+        public ContentTypeService(IDatabaseUnitOfWorkProvider provider, RepositoryFactory repositoryFactory, ILogger logger, IEventMessagesFactory eventMessagesFactory, IContentService contentService,
+            IMediaService mediaService)
            : base(provider, repositoryFactory, logger, eventMessagesFactory)
        {
            if (contentService == null) throw new ArgumentNullException("contentService");
@@ -210,7 +211,7 @@ namespace Umbraco.Core.Services

        public IEnumerable<EntityContainer> GetMediaTypeContainers(IMediaType mediaType)
        {
-            var ancestorIds = mediaType.Path.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
+            var ancestorIds = mediaType.Path.Split(new[] {','}, StringSplitOptions.RemoveEmptyEntries)
                .Select(x =>
                {
                    var asInt = x.TryConvertTo<int>();
@@ -297,7 +298,7 @@ namespace Umbraco.Core.Services
                repo.Delete(container);
                uow.Commit();

-                uow.Events.Dispatch(DeletedContentTypeContainer, this, new DeleteEventArgs<EntityContainer>(container, evtMsgs));
+                uow.Events.Dispatch(DeletedContentTypeContainer, this, new DeleteEventArgs<EntityContainer>(container, evtMsgs), "DeletedContentTypeContainer");

                return OperationStatus.Success(evtMsgs);
                //TODO: Audit trail ?
@@ -425,7 +426,7 @@ namespace Umbraco.Core.Services

            clone.Name = name;

-            var compositionAliases = clone.CompositionAliases().Except(new[] { alias }).ToList();
+            var compositionAliases = clone.CompositionAliases().Except(new[] {alias}).ToList();
            //remove all composition that is not it's current alias
            foreach (var a in compositionAliases)
            {
@@ -712,7 +713,7 @@ namespace Umbraco.Core.Services
            var comparer = new DelegateEqualityComparer<IContentTypeComposition>((x, y) => x.Id == y.Id, x => x.Id);
            var dependencies = new HashSet<IContentTypeComposition>(compositions, comparer);
            var stack = new Stack<IContentTypeComposition>();
-            indirectReferences.ForEach(stack.Push);//Push indirect references to a stack, so we can add recursively
+            indirectReferences.ForEach(stack.Push); //Push indirect references to a stack, so we can add recursively
            while (stack.Count > 0)
            {
                var indirectReference = stack.Pop();
@@ -770,6 +771,8 @@ namespace Umbraco.Core.Services

                    ValidateLocked(contentType); // throws if invalid
                    contentType.CreatorId = userId;
+                    if (contentType.Description == string.Empty)
+                        contentType.Description = null;
                    repository.AddOrUpdate(contentType);

                    uow.Commit();
@@ -812,6 +815,8 @@ namespace Umbraco.Core.Services
                    foreach (var contentType in asArray)
                    {
                        contentType.CreatorId = userId;
+                        if (contentType.Description == string.Empty)
+                            contentType.Description = null;
                        repository.AddOrUpdate(contentType);
                    }

@@ -1233,6 +1238,8 @@ namespace Umbraco.Core.Services

                    ValidateLocked(mediaType); // throws if invalid
                    mediaType.CreatorId = userId;
+                    if (mediaType.Description == string.Empty)
+                        mediaType.Description = null;
                    repository.AddOrUpdate(mediaType);
                    uow.Commit();

@@ -1274,6 +1281,8 @@ namespace Umbraco.Core.Services
                    foreach (var mediaType in asArray)
                    {
                        mediaType.CreatorId = userId;
+                        if (mediaType.Description == string.Empty)
+                            mediaType.Description = null;
                        repository.AddOrUpdate(mediaType);
                    }

@@ -1452,40 +1461,40 @@ namespace Umbraco.Core.Services
        /// </summary>
        public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IContentType>> DeletingContentType;

-		/// <summary>
-		/// Occurs after Delete
-		/// </summary>
-		public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IContentType>> DeletedContentType;
+        /// <summary>
+        /// Occurs after Delete
+        /// </summary>
+        public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IContentType>> DeletedContentType;

-		/// <summary>
-		/// Occurs before Delete
-		/// </summary>
-		public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IMediaType>> DeletingMediaType;
+        /// <summary>
+        /// Occurs before Delete
+        /// </summary>
+        public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IMediaType>> DeletingMediaType;

-		/// <summary>
-		/// Occurs after Delete
-		/// </summary>
-		public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IMediaType>> DeletedMediaType;
+        /// <summary>
+        /// Occurs after Delete
+        /// </summary>
+        public static event TypedEventHandler<IContentTypeService, DeleteEventArgs<IMediaType>> DeletedMediaType;

        /// <summary>
        /// Occurs before Save
        /// </summary>
-		public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IContentType>> SavingContentType;
+        public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IContentType>> SavingContentType;

        /// <summary>
        /// Occurs after Save
        /// </summary>
-		public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IContentType>> SavedContentType;
+        public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IContentType>> SavedContentType;

-		/// <summary>
-		/// Occurs before Save
-		/// </summary>
-		public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IMediaType>> SavingMediaType;
+        /// <summary>
+        /// Occurs before Save
+        /// </summary>
+        public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IMediaType>> SavingMediaType;

-		/// <summary>
-		/// Occurs after Save
-		/// </summary>
-		public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IMediaType>> SavedMediaType;
+        /// <summary>
+        /// Occurs after Save
+        /// </summary>
+        public static event TypedEventHandler<IContentTypeService, SaveEventArgs<IMediaType>> SavedMediaType;

        /// <summary>
        /// Occurs before Move
@@ -83,7 +83,7 @@ namespace Umbraco.Core.Services
        /// <returns></returns>
        public bool HasContainerInPath(string contentPath)
        {
-            using (var uow = UowProvider.GetUnitOfWork())
+            using (var uow = UowProvider.GetUnitOfWork(readOnly: true))
            {
                // can use same repo for both content and media
                var repository = RepositoryFactory.CreateContentTypeRepository(uow);
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Umbraco.Core.Cache;
 using Umbraco.Core.CodeAnnotations;
 using Umbraco.Core.Events;
@@ -81,33 +80,31 @@ namespace Umbraco.Core.Services
            {
                using (var uow = UowProvider.GetUnitOfWork(readOnly:true))
                {
-                    switch (umbracoObjectType)
-                    {
-                        case UmbracoObjectTypes.Document:
-                        case UmbracoObjectTypes.MemberType:
-                        case UmbracoObjectTypes.Media:
-                        case UmbracoObjectTypes.Template:
-                        case UmbracoObjectTypes.MediaType:
-                        case UmbracoObjectTypes.DocumentType:
-                        case UmbracoObjectTypes.Member:
-                        case UmbracoObjectTypes.DataType:
-                        case UmbracoObjectTypes.DocumentTypeContainer:
-                            return uow.Database.ExecuteScalar<int?>(new Sql().Select("id").From<NodeDto>().Where<NodeDto>(dto => dto.UniqueId == key));
-                        case UmbracoObjectTypes.RecycleBin:
-                        case UmbracoObjectTypes.Stylesheet:
-                        case UmbracoObjectTypes.MemberGroup:
-                        case UmbracoObjectTypes.ContentItem:
-                        case UmbracoObjectTypes.ContentItemType:
-                        case UmbracoObjectTypes.ROOT:
-                        case UmbracoObjectTypes.Unknown:
-                        default:
-                            throw new NotSupportedException();
-                    }
+                    var nodeObjectType = GetNodeObjectTypeGuid(umbracoObjectType);
+
+                    var sql = new Sql()
+                        .Select("id")
+                        .From<NodeDto>()
+                        .Where<NodeDto>(
+                            dto =>
+                                dto.UniqueId == key &&
+                                dto.NodeObjectType == nodeObjectType);
+                    return uow.Database.ExecuteScalar<int?>(sql);
                }                
            });
            return result.HasValue ? Attempt.Succeed(result.Value) : Attempt<int>.Fail();
        }

+        public Attempt<int> GetIdForUdi(Udi udi)
+        {
+            var guidUdi = udi as GuidUdi;
+            if (guidUdi == null)
+                return Attempt<int>.Fail();
+
+            var umbracoType = Constants.UdiEntityType.ToUmbracoObjectType(guidUdi.EntityType);
+            return GetIdForKey(guidUdi.Guid, umbracoType);
+        }
+
        /// <summary>
        /// Returns the GUID for a given integer id
        /// </summary>
@@ -120,32 +117,30 @@ namespace Umbraco.Core.Services
            {
                using (var uow = UowProvider.GetUnitOfWork(readOnly:true))
                {
-                    switch (umbracoObjectType)
-                    {
-                        case UmbracoObjectTypes.Document:
-                        case UmbracoObjectTypes.MemberType:
-                        case UmbracoObjectTypes.Media:
-                        case UmbracoObjectTypes.Template:
-                        case UmbracoObjectTypes.MediaType:
-                        case UmbracoObjectTypes.DocumentType:
-                        case UmbracoObjectTypes.Member:
-                        case UmbracoObjectTypes.DataType:
-                            return uow.Database.ExecuteScalar<Guid?>(new Sql().Select("uniqueID").From<NodeDto>().Where<NodeDto>(dto => dto.NodeId == id));
-                        case UmbracoObjectTypes.RecycleBin:
-                        case UmbracoObjectTypes.Stylesheet:
-                        case UmbracoObjectTypes.MemberGroup:
-                        case UmbracoObjectTypes.ContentItem:
-                        case UmbracoObjectTypes.ContentItemType:
-                        case UmbracoObjectTypes.ROOT:
-                        case UmbracoObjectTypes.Unknown:
-                        default:
-                            throw new NotSupportedException("Unsupported object type (" + umbracoObjectType + ").");
-                    }
+                    var nodeObjectType = GetNodeObjectTypeGuid(umbracoObjectType);
+
+                    var sql = new Sql()
+                        .Select("uniqueID")
+                        .From<NodeDto>()
+                        .Where<NodeDto>(
+                            dto =>
+                                dto.NodeId == id &&
+                                dto.NodeObjectType == nodeObjectType);
+                    return uow.Database.ExecuteScalar<Guid?>(sql);
                }
            });
            return result.HasValue ? Attempt.Succeed(result.Value) : Attempt<Guid>.Fail();
        }

+        private static Guid GetNodeObjectTypeGuid(UmbracoObjectTypes umbracoObjectType)
+        {
+            var guid = umbracoObjectType.GetGuid();
+            if (guid == Guid.Empty)
+                throw new NotSupportedException("Unsupported object type (" + umbracoObjectType + ").");
+
+            return guid;            
+        }
+
        public IUmbracoEntity GetByKey(Guid key, bool loadBaseType = true)
        {
            if (loadBaseType)
@@ -14,8 +14,7 @@ namespace Umbraco.Core.Services
    {
        public ExternalLoginService(IDatabaseUnitOfWorkProvider provider, RepositoryFactory repositoryFactory, ILogger logger, IEventMessagesFactory eventMessagesFactory)
            : base(provider, repositoryFactory, logger, eventMessagesFactory)
-        {
-        }
+        { }

        /// <summary>
        /// Returns all user logins assigned
@@ -23,30 +22,32 @@ namespace Umbraco.Core.Services
        /// <param name="userId"></param>
        /// <returns></returns>
        public IEnumerable<IIdentityUserLogin> GetAll(int userId)
-        {            
-            using (var uow = UowProvider.GetUnitOfWork())
+        {
+            using (var uow = UowProvider.GetUnitOfWork(readOnly: true))
            {
+                // ToList is important here, must evaluate within uow!
                var repo = RepositoryFactory.CreateExternalLoginRepository(uow);
-                var ret = repo.GetByQuery(new Query<IIdentityUserLogin>().Where(x => x.UserId == userId));
-                uow.Commit();
-                return ret;
+                return repo.GetByQuery(new Query<IIdentityUserLogin>()
+                    .Where(x => x.UserId == userId))
+                    .ToList();
            }
        }

        /// <summary>
-        /// Returns all logins matching the login info - generally there should only be one but in some cases 
+        /// Returns all logins matching the login info - generally there should only be one but in some cases
        /// there might be more than one depending on if an adminstrator has been editing/removing members
        /// </summary>
        /// <param name="login"></param>
        /// <returns></returns>
        public IEnumerable<IIdentityUserLogin> Find(UserLoginInfo login)
        {
-            using (var uow = UowProvider.GetUnitOfWork())
+            using (var uow = UowProvider.GetUnitOfWork(readOnly: true))
            {
+                // ToList is important here, must evaluate within uow!
                var repo = RepositoryFactory.CreateExternalLoginRepository(uow);
-                var ret = repo.GetByQuery(new Query<IIdentityUserLogin>().Where(x => x.ProviderKey == login.ProviderKey && x.LoginProvider == login.LoginProvider));
-                uow.Commit();
-                return ret;
+                return repo.GetByQuery(new Query<IIdentityUserLogin>()
+                    .Where(x => x.ProviderKey == login.ProviderKey && x.LoginProvider == login.LoginProvider))
+                    .ToList();
            }
        }

@@ -78,7 +79,5 @@ namespace Umbraco.Core.Services
                uow.Commit();
            }
        }
-
-        
    }
 }
@@ -28,7 +28,14 @@ namespace Umbraco.Core.Services
        /// <param name="key"></param>
        /// <param name="umbracoObjectType"></param>
        /// <returns></returns>
-        Attempt<int> GetIdForKey(Guid key, UmbracoObjectTypes umbracoObjectType);
+        Attempt<int> GetIdForKey(Guid key, UmbracoObjectTypes umbracoObjectType);
+
+        /// <summary>
+        /// Returns the integer id for a given Udi
+        /// </summary>
+        /// <param name="udi"></param>
+        /// <returns></returns>
+        Attempt<int> GetIdForUdi(Udi udi);

        /// <summary>
        /// Returns the GUID for a given integer id
@@ -468,12 +468,7 @@ namespace Umbraco.Core.Services
        /// <param name="filepath">The filesystem path to the media.</param>
        void DeleteMediaFile(string filepath);

-        /// <summary>
-        /// Generates thumbnails.
-        /// </summary>
-        /// <param name="filepath">The filesystem-relative path to the original image.</param>
-        /// <param name="propertyType">The property type.</param>
-        /// <remarks>This should be obsoleted, we should not generate thumbnails.</remarks>
+        [Obsolete("This should no longer be used, thumbnail generation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        void GenerateThumbnails(string filepath, PropertyType propertyType);
    }
 }
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Xml.Linq;
 using Umbraco.Core.Models;

@@ -6,6 +7,15 @@ namespace Umbraco.Core.Services
 {
    public interface IPackagingService : IService
    {
+        /// <summary>
+        /// This will fetch an Umbraco package file from the package repository and return the relative file path to the downloaded package file
+        /// </summary>
+        /// <param name="packageId"></param>
+        /// <param name="umbracoVersion"></param>
+        /// <param name="userId">The current user id performing the operation</param>
+        /// <returns></returns>
+        string FetchPackageFile(Guid packageId, Version umbracoVersion, int userId);
+
        /// <summary>
        /// Imports and saves package xml as <see cref="IContent"/>
        /// </summary>
@@ -692,11 +692,11 @@ namespace Umbraco.Core.Services
            }

            Func<string, Sql> createSql = url => new Sql().Select("*")
-                                                  .From<PropertyDataDto>()
-                                                  .InnerJoin<PropertyTypeDto>()
-                                                  .On<PropertyDataDto, PropertyTypeDto>(left => left.PropertyTypeId, right => right.Id)
-                                                  .Where<PropertyTypeDto>(x => x.Alias == "umbracoFile")
-                                                  .Where<PropertyDataDto>(x => x.VarChar == url);
+                .From<PropertyDataDto>()
+                .InnerJoin<PropertyTypeDto>()
+                .On<PropertyDataDto, PropertyTypeDto>(left => left.PropertyTypeId, right => right.Id)
+                .Where<PropertyTypeDto>(x => x.Alias == "umbracoFile")
+                .Where<PropertyDataDto>(x => x.VarChar == url);

            var sql = createSql(umbracoFileValue);

@@ -899,8 +899,14 @@ namespace Umbraco.Core.Services
                    throw new ArgumentException("Cannot save media with empty name.");
                }

-                var repository = RepositoryFactory.CreateMediaRepository(uow);
-                media.CreatorId = userId;
+                var repository = RepositoryFactory.CreateMediaRepository(uow);
+
+                //set the creator id if it's new
+                if (media.HasIdentity == false)
+                {
+                    media.CreatorId = userId;
+                }
+
                repository.AddOrUpdate(media);
                repository.AddOrUpdateContentXml(media, m => _entitySerializer.Serialize(this, _dataTypeService, _userService, m));
                // generate preview for blame history?
@@ -1048,7 +1054,7 @@ namespace Umbraco.Core.Services
        /// <param name="userId">Optional id of the user deleting the media</param>
        public void DeleteMediaOfType(int mediaTypeId, int userId = 0)
        {
-            DeleteMediaOfTypes(new[] {mediaTypeId}, userId);
+            DeleteMediaOfTypes(new[] { mediaTypeId }, userId);
        }

        /// <summary>
@@ -1431,6 +1437,7 @@ namespace Umbraco.Core.Services
            _mediaFileSystem.DeleteFile(filepath, true);
        }

+        [Obsolete("This should no longer be used, thumbnail generation should be done via ImageProcessor, Umbraco no longer generates '_thumb' files for media")]
        public void GenerateThumbnails(string filepath, PropertyType propertyType)
        {
            using (var filestream = _mediaFileSystem.OpenFile(filepath))
--- a/Show More
+++ b/Show More