switch to two columns in hit#edit
Play 2s from selection bounds in hit edit #51
Audio auto-loads (Fix #40)

Well, it doesn't *actually* autoload. The JS fakes a doubleclick on the player, to start and stop it, prompting SoundManager2 to start loading the audio file
Add edit boxes for hit location (#45)
Check if new feat has been added after hit's been edited

I think this fixes #50.  If a new feature has been added after a hit has already been saved, it'll throw an error.  This should check if that's the case and default to a blank selection.
Clean up feature display in annotation screen
Merge branch 'new-layout'