@heff fixed a code bug in track XHR requests. closes #1715
Release 4.11.1
Merge branch 'stable'

Conflicts:
	dist/video-js/video-js.css
	dist/video-js/video-js.min.css
	dist/video-js/video.dev.js
	dist/video-js/video.js
@PeterDaveHello added a Traditional Chinese translation. closes #1729