added streetobjects
Added door animations
Edited door animations
Changed boolean check to String check. Added timers to delay when walking through the door
Merge remote-tracking branch 'origin/door-animations' into develop

Conflicts:
	zombie-world/src/se/glory/zombieworld/screens/GameScreen.java
	zombie-world/src/se/glory/zombieworld/utilities/Animator.java
	zombie-world/src/se/glory/zombieworld/utilities/CollisionDetection.java
	zombie-world/src/se/glory/zombieworld/view/GameView.java