Bunch of fixes, finished Forest Level

- Fixed Doors not working, Be careful when modifying prefab/sprites used
elsewhere !
- Fixed Spikes not having sprites anymore. Same thing here, careful while
  playing with sprites.
- Modified Forest layout some more, The level is now done up to the boss.
  Still need to change goomba enemy.
- Added Random values to lizard so they do not act synced when there are
  multiple lizards at the same time.