Buildingmanagement draft

Signed-off-by: Drakulo <alex.frene@gmail.com>
Merge branch 'develop' of http://github.com/aurelien-defossez/la-poudre-blanche into develop
 + Building management
Conflicts:
	src/states/PlayState.as

Signed-off-by: Drakulo <alex.frene@gmail.com>
Merge branch 'develop' of http://github.com/aurelien-defossez/la-poudre-blanche into develop