some test changes
fixes #53

toolbar translucent, pref/next button are enabled/disabled
fixes touch issue

no more crash when tapping the background, now able to detect
transparent parts/pixels of an object
improvements loudness handler
Merge branch 'development' of gh:Catrobat/Catty into ide

* 'development' of gh:Catrobat/Catty:
  improvements loudness handler
  fixes touch issue
  fixes #53
  some test changes