[3258] Improve crash reports for Sequencer
[#3215] buffered for player media clips.
[t3233] Changed default project to be blank with no events
[t3128] Editor
[t3128] Don't show fallback by default
whitespace
removed old code for editing styles
fixes
some fixes for input updating, abstracting updating UI
fixed type not being read in Firefox
checking for width < 0 in onResizeRight
whitespace
review fixes
prevent tooltip for new line on url textareas
empty url case
make html5 urls unique