fixes #119
added SWTableViewCell classes
fixes #126
refactor ProgramTVC tests
update project structure
Merge branch 'issue#126' of gh:Catrobat/Catty into development

* 'issue#126' of gh:Catrobat/Catty:
  update project structure
  refactor ProgramTVC tests
  fixes #126
  added SWTableViewCell classes
  fixes #119