Tweaked the most recent tests.
Integrated WebGLLayer and WebGLSprite with CocoSprite.
Disabled some features in CocoSprite that'll have to be added back later.
Moved more logic from CocoSprite, like determining registration points for a given animation, to WebGLSprite.
WebGLSprite can now display either rendering containers or SpriteSheets.
Initial integration of SpriteBoss with the WebGLLayer and all else.
Added a test to make sure the WebGLLayer ended up with the right number of children after multiple renderings. Fixed something that was breaking WebGLLayer and WebGLSprite tests.
Container renderings are now dependent on resolution.