Merge pull request #149 from Catrobat/development

Development
added support for progressView
ProgressView at ProgramDetailStoreViewController
small bugfix
merge
solved merge Conflicts
better integration of progressView
Merge pull request #151 from Catrobat/development

Development
fixed testcase warning
status bar reenabled once back from scene
Merge branch 'master' of github.com:Catrobat/Catty
moved status bar hidden to viewWillDisappear
fix resetting last program on restart
changed network defines
fix for not reloading when we received all data
display featured image in downloads
remove useless loop
fix rename program bug
Merge branch 'development' of gh:Catrobat/Catty into development

* 'development' of gh:Catrobat/Catty:
  remove useless loop
  display featured image in downloads
  fix for not reloading when we received all data
  changed network defines
fixes #121 and disallow special chars for names