Logic of enemies shots and the player. IngameHubA functional. New class MenuGameOver. Logic of the death of the player ship.

Graphics: splash screen (gameover and main menu), adjustments in some of the enemies sprites.
Merge branch 'master' of https://github.com/maxi-jp/project_chandra

Conflicts:
	IS_XNA_Shooter/IS_XNA_Shooter/IS_XNA_Shooter/GRMng.cs