IPv4 FS audio fallback, auto-reconnect, and fixed input select

Closed Captions UI improvements part1

Closes #7581

Closes  #7594

Closes #7580

Shared notes unread indicator

Pulled html5 locales June 11, 2019

Add context to manage locksettings

Turn off SWF generation and turn on SVG generation

Lock screenshare option when datasaving screenshare setting is disabled

Accessibility fixes for Presenter View

Creates component for breakout invitation

Add toasts for Emoji changes / Meeting mute

Fix server exceptions when get a invalid session token.

Fix webcam size after minimize the presentation

 - use thumbnails to find the num pages of presentation instead of swfs as we now turn off generation of
   swfs for html5

Merge branch 'fix-recording-swf-disabled' of https://github.com/riadvice/bigbluebutton into riadvice-fix-recording-swf-disabled

Support uploading text track for recording

Merge branch 'master' of github.com:bigbluebutton/bigbluebutton into captions-text-tracks-intermediate-branch

Merge branch 'captions-text-tracks-intermediate-branch' of github.com:bigbluebutton/bigbluebutton into captions-text-tracks-intermediate-branch

 - put captions into temporary file to remove race condition between start of processing and writing contents of file.