Adjusted line-height for dash warning

Just makes it look a little nicer
Merge remote-tracking branch 'upstream/master'
Fix for stacking notifications

Video player just plays over the top
Max-height set on footer to display 3 stacked messages
Media player fixes

* Fix for hidden audio player
* Fullscreen hover fix
Merge remote-tracking branch 'upstream/master'
Video player updates

* Removed js to add class name for 4:3 aspect ratio
* Added min/max width for video to try and eliminate layout issues
Added data- attributes

Expose width/height that may help set video player size when creating
DOM elements
Merge pull request #745 from timhobbs/master

Media player updates