releasing version 0.9.4
Merge pull request #757 from Catrobat/release0.9.4

releasing version 0.9.4
Merge branch 'master' of https://github.com/Catrobat/Catroid into legonxt
Modify testPauseOnBackButton to do something useful
Merge pull request #758 from Catrobat/TestPauseOnBackButton

Modify testPauseOnBackButton to do something useful
Refactor all test cases related to the SoundManager
Simplify load and save project in StorageHandler
Refactor StageListener
Merge pull request #737 from Catrobat/refactorCode

Refactor code
Merge branch 'master' of https://github.com/Catrobat/Catroid into legonxt
ui nxt configuration first try