Gets delete and empty recycle bin working, adds unit tests for tree service, ensures that the recycle bin shows children whenever something is deleted (though, i now realize i need to refresh the recycle bin node and expand it when something is deleted). Renames some namespaces for content/media/etc... controllers and makes the file names more readable.

src/Umbraco.Web/Trees/ContentTreeControllerBase.cs

@@ -43,7 +43,8 @@ namespace Umbraco.Web.Trees
                     queryStrings,
                     ui.GetText("general", "recycleBin"),
                     "icon-trash",
-                    RecycleBinSmells));
+                    RecycleBinSmells,
+                    queryStrings.GetValue<string>("application") + "/recyclebin"));
                 return nodes;
             }