Graphics, partial io asset refactor
Asset loading using new IO interface. Asset dependency left
Minor changes to graphics on this branch w/e
Comments!
Working.
Merge remote-tracking branch 'origin/feat/assetman' into devel

Conflicts:
	src/com/engine/sevenge/GameActivity.java
	src/com/engine/sevenge/ecs/CameraSystem.java
	src/com/engine/sevenge/sample/SampleGameState.java