[Server][Controller] Delete some finalize().
[Client][Controller] Add field client.
[Client][View] Creation empty roster in view.
[Server][Controller]Add some println().
[Server][UserListener]Add some println()
[Client][Client] Add simple body of run(): create new user, and then login on server.
[Client][Controller] Add in every function parameter listener.
[Client][ServerListener] Add full body of listener.
[Client][Controller] Add requestLogout().
[Client][Client] Add logout, and some comments.