Updated the data type controller post method and moved validation, etc... over to a filter, updated data type tree with the create menu action to launch into a blank element.

src/Umbraco.Web/Trees/MediaTreeController.cs

@@ -47,7 +47,7 @@ namespace Umbraco.Web.Trees
                 // root actions         
                 menu.AddMenuItem<ActionNew>();
                 menu.AddMenuItem<ActionSort>(true);
-                menu.AddMenuItem<RefreshNodeMenuItem, ActionRefresh>(true);
+                menu.AddMenuItem<RefreshNode, ActionRefresh>(true);
                 return menu;
             }