Added SelectionGroup
Commit for merge/bookkeeping
Merge branch 'master' of https://github.com/atklobas/BC_BrickBreaker.git
into SelectionView

Conflicts:
	BC_BrickBreaker/src/controller/Collision_Controller.java
	BC_BrickBreaker/src/controller/Tester.java
	BC_BrickBreaker/src/model/Box.java
	BC_BrickBreaker/src/model/Brick.java
	BC_BrickBreaker/src/model/Line.java
	BC_BrickBreaker/src/model/Paddle.java
	BC_BrickBreaker/src/model/Sphere.java
Fixed to compile