Idle Client Timeout Functionality

Added the functionality client side to log users out of servers if they
are idle for more than 1 hour without joining either a game or room.
Sending a message (room/game/private) or performing a game action.

cockatrice/src/tab_room.h

@@ -59,6 +59,7 @@ signals:
     void roomClosing(TabRoom *tab);
     void openMessageDialog(const QString &userName, bool focus);
     void maximizeClient();
+    void notIdle();
 private slots:
     void sendMessage();
     void sayFinished(const Response &response);