Est. End time display and ffwd rwd

[activoice]

Sent this in an email a while back not sure if it reached the developer.

On the playback UI it would be great if based on the amount of
playback time remaining, playback speed, and current time of day if the UI
could provide an estimated end time (ie End Time: 10:25pm) XBMC does
this, and it's a great feature.

Also if the video file does not contain any chapter markers it would be great if the forward and back buttons defaulted to moving forward or backwards by 5 minutes. (instead of only having the option of swiping to seek forward) Most video files don't have chapter markers, so the buttons as they sit are not used that often (if at all)