enhanced ModuleActions component to display panes in a submenu, added more containers to Oqtane theme, added more panes to MultiPane layout, added module outline in edit mode to distinguish modules in panes, consolidated to use a single default AdminPane named "Content", fixed bug related to custom Admin Container behavior

Oqtane.Shared/Shared/PaneNames.cs

@@ -1,9 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
 namespace Oqtane.Shared {
     public class PaneNames {
-        public const string Admin = "Admin";
+        public const string Admin = "Content";
     }
 }