Merge tag '3.6' into develop

Version 3.6
Fix feedback compose view in landscape and iOS 8

In landscape the text couldn't be seen, since the text view was moved up due to iOS 8 returning the keyboard height now as `height` in landscape, while it did return it as `width` in previous iOS versions.
3.6.1 release and documentation updates
Merge branch 'release/3.6.1'