fixes #203
Merge pull request #207 from Catrobat/bgColorIssue

The image Caching could be further improved : At the moment we have redundant code whenever an image is not in the cache, we have to manually load it into the cache (each class has the same code))
Merge pull request #208 from Catrobat/issue#203

fixes #203
fixes #210 - correct launch image
fixes #211, wrong status bar color on launch
Merge pull request #212 from Catrobat/launch-image

Launch image & Status bar color
fixes #154, WhackAMole - Default program
Merge pull request #214 from Catrobat/default-program

fixes #154, WhackAMole - Default program
set program-pointer to nil in CatrobatTVC
Merge pull request #215 from Catrobat/memoryIssue

set program-pointer to nil in CatrobatTVC
Merge branch 'master' of gh:Catrobat/Catty into ide_refactoring

* 'master' of gh:Catrobat/Catty:
  set program-pointer to nil in CatrobatTVC
  fixes #154, WhackAMole - Default program
  fixes #211, wrong status bar color on launch
  fixes #210 - correct launch image
  fixes #203

Conflicts:
	src/Catty/ProgramDetailStoreViewController.m