Merge pull request #2 from GammaNu/gh-pages

Refactoring massif, en particulier sur les zombies.
Dying now restart the level, not the whole game.
Fixed a game-breaking bug causing timers to stop after the lava bridge.
Fixed a bug causing player light to not decay.
Merge remote-tracking branch 'draklaw/ld-final' into gh-pages
Merge remote-tracking branch 'draklaw/master' into gh-pages