the tab order of the playback controls is set
Volume slider always visible, part of tab order, does not trigger resizing bug
changed the way the playback volume bar is exposed
Merge remote branch 'upstream/master' into playback-accessibility-fixes
add back in playback headings
add back in the fix for playback acorn media player swap oddities
Merge pull request #226 from SenecaCDOT-BigBlueButton/playback-accessibility-fixes

Playback accessibility fixes
Merge branch 'master' of https://github.com/bigbluebutton/bigbluebutton