Added English (US) translation for "content_setDate"

src/Umbraco.Web.UI/umbraco/config/lang/en_us.xml

@@ -201,6 +201,7 @@
         <key alias="releaseDate">Publish at</key>
         <key alias="unpublishDate">Unpublish at</key>
         <key alias="removeDate">Clear Date</key>
+        <key alias="setDate">Set date</key>
         <key alias="sortDone">Sortorder is updated</key>
         <key alias="sortHelp">To sort the nodes, simply drag the nodes or click one of the column headers. You can select multiple nodes by holding the "shift" or "control" key while selecting</key>
         <key alias="statistics">Statistics</key>
@@ -2100,4 +2101,4 @@ To manage your website, simply open the Umbraco back office and start adding con
     <area alias="textbox">
         <key alias="characters_left">characters left</key>
     </area>
-</language>
+</language>