Remove old Fort Mode from frontend Part of ripping out Fort Mode from game schemes. This time for real. - Remove the game modifier button "Fort Mode" - Remove the scheme "Fort Mode" - Remove some fort mode handling code - Keep gfForts symbol to not mess up things too much - Old schemes are still supported, the fortsmode parameter is just ignored

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

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

    return a.exec();
}