* Fission OGS1UserServices into user service and OGS1 user data plugin components

* Make OGS1UserServices inherit from UserManagerBase
* This allows grid mode regions to use the same user data plugin infrastructure as grid servers and standalone OpenSims

OpenSim/Grid/MessagingServer.Modules/UserDataBaseService.cs

@@ -70,6 +70,6 @@ namespace OpenSim.Grid.MessagingServer.Modules
         {
             //throw new Exception("The method or operation is not implemented.");
             return null;
-        }
+        }     
     }
 }