Fixed several layout issues on newer devices; updated colours
Fixed a two finger press bug
Partially-completed reorganisation of layout, aiming for better consistency

Completed frame editor and text editor; partially completed audio editor
Setting to hide back button made invisible in API 11+ where it is no
longer applicable
Preferences renamed to settings
Also improved display of about box in settings
Added strings-v11 for slightly longer, more informative strings in
menus where possible