Changed, curved event lines, Visual mode: associated lines were not rendered...

Changed, curved event lines, Visual mode: associated lines were not rendered as curved when the control object was not on screen [Xabis' patch #3].
Game configurations: removed "GZDoom only" from FraggleScript actions (because FraggleScript can be used in ZDoon).
Internal: fixed a couple of bugs in DebugConsole.StopTimer();