Movie View: don't use action sheets to switch crop or aspect ratio settings - just click on the same button multiple times to toggle through the list

TODO: visual feedback for user

http://cl.ly/image/2j0e1k13203s

Should be replaced with touch gestures, etc. Check android port for inspiration

prepares buttons for aspect ratio and crop

this solves some drawing issues, is a lot nicer to look at and edit and adds support for the linear progress indicator

http://cl.ly/image/2E1T1R3U1x2f