Begin Copy Sound per ActionBar
Fix issue#498

Added Catrobat-Link to about dialog like in Pocketpaint
Fix issue#485

Inserted notification dialog for community button.
implemented copy sound per action bar
added test regarding to copy Sound per ActionBar
fixed Bugs
fix test
refactored BroadcastBricksTest with @robertpainsi
Remove ProjectManager.getInstance() method
Refactor singletons
Detect wrong assert messages with empty string or with delta value
issue SOR-2, added face detection, WhenFaceDetectedBrick
issue SOR-3, added face size and face position to formula editor
commit with failing test cases
removed WhenFaceDetectedBrick
issue SOR-3, added test cases
issue SOR-3 improved formula editor face detection tests
saving tmp changes to merge master
Merge branch 'SOR-facedetection' of https://github.com/Catrobat/Catroid into SOR-facedetection

Conflicts:
	catroid/src/org/catrobat/catroid/facedetection/FaceDetector.java