[#885813] Handle unexpected media clip ended events.
Fix bug 890983 - Clean up unused file store code
Fix bug 890960 - Show pretty error page where possible
[#890654] Seperate loading for UI and for actual clips.
v1.1.47
bug889348 - Fix User Bar CSS is leaking into UI of entire App
Fix Bug 890772 - Change default thumbnail background to white
Fix Bug 889927 - Up/Down keys no longer destroy trackevent when just updating zindex
1.1.48
[#890640] Error out YouTube clips instead of timeout when we can.
[#891190] Do not setup both play and pause switch, only the one we need, as they toggle each other.
Fix Bug 891512 - Update submodule
1.1.49
[#891576] Ensure if playing, we only listen for pause events, and if paused we only listen for play events.
[#891945] Remove events on ended.
Fix Bug 876909 - Pasting trackevents should attempt to maintain the same ordering and not add new layers
Fix Bug 859493 - Pasted trackevents should maintain their selected state
1.1.50
Fix Bug 890651 - Work around for Firefox not supporting input type=number was breaking our custom timestamp start/end inputs
Fix Bug 892011 - Ensure all cases for auto remixing of projects are working