Fixed return button bug, and updated level 6
Merge branch 'master' of github-katfom:BlobbyProj/Blobby into katya
Added level 6 (again), fixed seg fault on the return hotkey, fixed return on scoreboard problem
Merge branch 'master' of github-katfom:BlobbyProj/Blobby
Merge branch 'deanna' of github.com:BlobbyProj/Blobby
Deleted unnecessary files and fixed set_progress in levelmanager
Added level buttons