Revize cf35739b

Refs #9051, #9050. Added more tests + fixed some bugs revealed by the tests.

Server/ServerApp/User/CommandsAcceptor.cs

@@ -30 +30 @@
 			while (true) {
 				Console.Write(">");
 				string command = Console.ReadLine();
-				if(command.Length > 0)
+				if(command != null && command.Length > 0)
 				{
 					Console.WriteLine("received admin command: " + command);
 					Command c = ParseString(command);