added powerBar and fireButton
Merge pull request #17 from gonch/ad_game

added powerBar and fireButton
fixes on power bar and center
physics
Merge branch 'master' of https://github.com/gonch/JungleArena
Merge branch 'master' into ga_Music

Conflicts:
	src/com/tdt4240/A6/junglearena/screens/GameScreen.java