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

expose supported file types so 3rd party apps can access Aspen to play their (cached) stuff (close #8585)

This includes protocol support for ftp, sftp, rtp, udp, rtmp, mms / mmsh and smb

This reverts commit 32ad7051.