add time/millis converters
remove obsolete #embed_clips click handler
some fixes to clip editor and add underscore
fix selector for delete click handler
Merge branch 'master' of github.com:NUKnightLab/soundcite.knightlab.com

Conflicts:
	static/js/main.js
remove console.log
remove console.log
restore setting time in mm:ss.s
new placeholders
simplify loading widget
simplify ref to player iframe
don't load soundcloud sound twice