don't load mjolnir on startup; and use the mod specified on the commandline

OpenRA.Editor/Program.cs

@@ -11,11 +11,11 @@ namespace OpenRA.Editor
 		/// The main entry point for the application.
 		/// </summary>
 		[STAThread]
-		static void Main()
+		static void Main( string[] args )
 		{
 			Application.EnableVisualStyles();
 			Application.SetCompatibleTextRenderingDefault(false);
-			Application.Run(new Form1());
+			Application.Run(new Form1(args));
 		}
 	}
 }