add plugin localization doc
doc update
moved event.preventDefault() inside of if-then structure
Added a line to the changelog for #1760
Export tech.setSetsource method for Html5 and Flash
Added a line to the changelog for #1753
Fix rtmp rtmpSourceHandler calls to tech
Added a line to the changelog for #1755
Release 4.11.3
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
@mmcc updated the hide/show functions to use a class instead of inline styles. closes #1681
Warning for previously updated players; doc update
Updated #1730 to use the ready function instead of warning.
Added a line to the changelog for #1730.
closes #1730
@anhskohbo added a Vietnamese translation. closes #1734
@Sxmanek added a Czech translation. closes #1739
Add vjs-scrubbing class to player while scrubbing
Prevent menus from opening while scrubbing
Added a line to the changelog for #1741
Merge pull request #1747 from thijstriemstra/master

Add plugin localization doc
@dmlap fixed URL parsing in IE9. closes #1765