Fixed a big bug:
- Now "pause" is working again: you can pause and unpause the game.
- Tiles in KSirtet and KFoulEggs are now falling again at the start of the game! (There is still a bug there: they stop to fall after a while... but you can still continue to play and to place the tiles where you want...)
- No crash anymore in KSirtet while playing against the computer ("Human VS. Computer" mode) even if it's still not playable because of other problems...
So... -> still a lot to do!