separator line fixes
fixed cell image view and title center position
Merge branch 'master' into issue#287

Conflicts:
	src/Catty/ProgramTableViewController.m
	src/Catty/iPhone.storyboard
Merge branch 'master' into issue#287

Conflicts:
	src/Catty/ProgramTableViewController.m
	src/Catty/iPhone.storyboard
Merge pull request #334 from Catrobat/issue#287

Issue#287