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Merge pull request #373 from Catrobat/issue#364

some preparations for new parser
new introView for iOS8
fixes delayed NavigationBar
fixes navigationBarHidden after swiping back
Merge pull request #377 from Catrobat/marc_fixes

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fixes #378
fix for after-download-renaming issue
Merge pull request #381 from Catrobat/issue#378

Issue#378
fixes CatrobatTableView and DownloadSegmentedControl for iPhone6
fixed SlideMenu + ProgramDetail for iPhone6
fixed some hardcoded stuff
new height/width variable brickCells
some small UI changes
remove ios7 targets + update schemes
Merge pull request #382 from Catrobat/iPhone6optimizing

Iphone6optimizing