Don't resend "team quit" message when client closes engine, then quits room: - Fixes server crashes when client had more than one team in game - Fixes game freeze when half of players quit game

#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}