Implement audio quality bars

Add indication that join breakout room btn opens new window

Add lang prop to Settings language select element

Add current size to Increase / Decrease font size btn aria labels

Add time unit to aria labels in create breakout rooms modal

Added Unified Plan <-> Plan B translation for Safari endpoints

Merge branch 'issue7461-localize-remaining-labels' of github.com:diegobenetti/bigbluebutton into test-loc

Pulled html5 locales May 23, 2019; added Vietnamese

Don't show phone user on create breakout room list

Fix refPresentationContainer requestFullscreen is not a function

Verifies if subscription already exists before calling subscribe

Log out user prior to Feedback (end all media streams)

Stop webcams when opens audio modal.

Fix permissions of bigbluebutton-config utilities

Also tidy some stray lines