Replace anchor elements with button in member and member groups (#8320)

src/Umbraco.Web.UI.Client/src/views/propertyeditors/membergrouppicker/membergrouppicker.html

@@ -10,13 +10,11 @@
 		</umb-node-preview>
 	</div>
 
-	<a 
-		class="umb-node-preview-add" 
-		href="#"
-		ng-click="openMemberGroupPicker()"
-		prevent-default>
+	<button type="button"
+            class="umb-node-preview-add"
+            ng-click="openMemberGroupPicker()">
 		<localize key="general_add">Add</localize>
-	</a>
+	</button>
 
     <input type="hidden" name="mandatory" ng-model="model.mandatory" ng-required="model.validation.mandatory && !renderModel.length" />
 

src/Umbraco.Web.UI.Client/src/views/propertyeditors/membergroups/membergroups.html

@@ -1,11 +1,15 @@
 <div ng-controller="Umbraco.PropertyEditors.MemberGroupController">
+
     <umb-node-preview ng-repeat="group in getSelected() | orderBy"
                       icon="'icon-users'"
                       name="group"
                       allow-remove="true"
                       on-remove="removeGroup(group)">
     </umb-node-preview>
-    <a href ng-click="pickGroup()" class="umb-node-preview-add" prevent-default>			  
+
+    <button type="button"
+            class="umb-node-preview-add"
+            ng-click="pickGroup()">
         <localize key="general_add">Add</localize>
-    </a>
+    </button>
 </div>

src/Umbraco.Web.UI.Client/src/views/propertyeditors/memberpicker/memberpicker.html

@@ -10,9 +10,10 @@
 		</umb-node-preview>
 	</div>
 
-	<button type="button" ng-show="model.config.multiPicker === true || renderModel.length === 0" 
-		class="umb-node-preview-add" 
-		ng-click="openMemberPicker()">
+	<button type="button"
+            class="umb-node-preview-add" 
+            ng-show="model.config.multiPicker === true || renderModel.length === 0" 
+		    ng-click="openMemberPicker()">
 		<localize key="general_add">Add</localize>
 	</button>