Buttons : music & sound btn toggling.
project : Format code & fix import
Merge remote-tracking branch 'origin/gui'

Conflicts:
	src/fr/miage/atlantis/entities/Shark.java
	src/fr/miage/atlantis/graphics/AnimationBrain.java
	src/fr/miage/atlantis/graphics/InputActionListener.java
	src/fr/miage/atlantis/logic/GameTurnListener.java
gui : changed nick size for observer players