Added username to window title

While having more than 1 client open I found it hard to know which user
was which. I have added the user name to the title bar so you know who
you are logged in as.

cockatrice/src/abstractclient.h

@@ -82,6 +82,8 @@ public:
     ClientStatus getStatus() const { QMutexLocker locker(&clientMutex); return status; }
     void sendCommand(const CommandContainer &cont);
     void sendCommand(PendingCommand *pend);
+
+    const QString getUserName() {return userName;}
     
     static PendingCommand *prepareSessionCommand(const ::google::protobuf::Message &cmd);
     static PendingCommand *prepareRoomCommand(const ::google::protobuf::Message &cmd, int roomId);

cockatrice/src/window_main.cpp

@@ -287,7 +287,7 @@ void MainWindow::setClientStatusTitle()
         case StatusConnecting: setWindowTitle(appName + " - " + tr("Connecting to %1...").arg(client->peerName())); break;
         case StatusDisconnected: setWindowTitle(appName + " - " + tr("Disconnected")); break;
         case StatusLoggingIn: setWindowTitle(appName + " - " + tr("Connected, logging in at %1").arg(client->peerName())); break;
-        case StatusLoggedIn: setWindowTitle(appName + " - " + tr("Logged in at %1").arg(client->peerName())); break;
+        case StatusLoggedIn: setWindowTitle(appName + " - " + tr("Logged in as %1 at %2").arg(client->getUserName()).arg(client->peerName())); break;
         default: setWindowTitle(appName);
     }
 }