Left and right event correceted
Level1 start and stop blocks added
Background corrected
Merge branch 'master' of https://github.com/damp/Damp

Conflicts:
	SuperIHABrothers/SuperIHABrothers/SuperIHABrothers/Sprite/ISpriteContainerCollision.cs
	SuperIHABrothers/SuperIHABrothers/SuperIHABrothers/Sprite/SpriteContainer.cs