Examine subtitle streams more deeply from detect
Process subtitles in backend
Add libjass
Wire up libjass to eligible video players
Fix regarding libjass's handling of video size
Fix subtitles on fullscreen, add toggling softsubs
Fix issue detecting default subtitle stream
Fix issue with libjass CSS
Fix issue with loading subs in albums
Update libjass, fix ass parser call
Drop faststart and switch thumbnail to jpg
Update libjass
Fix issues with subtitle processing
Add srt and vtt to processing pipeline
Merge branch 'master' into libjass

Conflicts:
	mediacrush/processing/detect.py
Check for existence before trying to use has_fonts
Merge branch 'master' into libjass
Add captionator.js for WebVTT subtitles

Since we convert SRT to VTT, this will also work for VTT subs.
Merge branch 'master' into libjass
Render srt/vtt subtitles on video