Fixes 26781 - tree cache issue

[TFS Changeset #65498]

umbraco.sln

@@ -93,7 +93,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "DLLs", "DLLs", "{F06D18F6-C
 		foreign dlls\Microsoft.Scripting.ExtensionAttribute.dll = foreign dlls\Microsoft.Scripting.ExtensionAttribute.dll
 		foreign dlls\MySql.Data.dll = foreign dlls\MySql.Data.dll
 		foreign dlls\TidyNet.dll = foreign dlls\TidyNet.dll
-		foreign dlls\UmbracoExamine.dll = foreign dlls\UmbracoExamine.dll
 		foreign dlls\UrlRewritingNet.UrlRewriter.dll = foreign dlls\UrlRewritingNet.UrlRewriter.dll
 		foreign dlls\VistaDB For Umbraco.dll = foreign dlls\VistaDB For Umbraco.dll
 		foreign dlls\VistaDB.NET20.dll = foreign dlls\VistaDB.NET20.dll

umbraco/presentation/config/ClientDependency.config

@@ -10,7 +10,7 @@ NOTES:
 * Compression/Combination/Minification is not enabled unless debug="false" is specified on the 'compiliation' element in the web.config
 * A new version will invalidate both client and server cache and create new persisted files
 -->
-<clientDependency version="20"> 
+<clientDependency version="21">
   
   <fileRegistration defaultProvider="PageHeaderProvider" fileDependencyExtensions=".js,.css">
     <providers>

umbraco/presentation/umbraco_client/Tree/UmbracoTree.js

@@ -129,7 +129,7 @@ Umbraco.Sys.registerNamespace("Umbraco.Controls");
                 // <summary>This will remove all stored trees in client side cache so that the next time a tree needs loading it will be refreshed</summary>
                 this._debug("clearTreeCache...");
 
-                this._loadedApps = {};
+                this._loadedApps = [];
             },
 
             toggleEditMode: function(enable) {