outsource background img
clean code
Merge branch 'master' of ssh://git@github.com/imscaradh/clevermaze.git

Conflicts:
	CleverMaze/src/ch/gibb/project/activity/Activity.java
	CleverMaze/src/ch/gibb/project/elements/Maze.java
	CleverMaze/src/ch/gibb/project/elements/MazeElement.java