Fix layers for existing prefabs.
Merge branch 'master' of github.com:crentagon/GGJ2014Senses

Conflicts:
	Assets/Resources/Prefabs/Level/Floor.prefab
	Assets/Resources/Prefabs/Level/WallTile.prefab
	Assets/Resources/Prefabs/Player.prefab
Fix WallTile layer.
Merge branch 'master' of github.com:crentagon/GGJ2014Senses