Fix non userData defined shortcuts not functioning

Logging with JSON stringify was leading to crashes. Reverting, need t…

Workaround for freeswitch clock out of sync problems

Prevent userChangedLocalSettings call failing at start

Update message / style for remove user confirmation

Pulled HTML5 locales May 22, 2020

Distinguish between eject and ban for Remove user

Simplify the code used for promote-demote subscriptions

Update shared note item style

Fix userData-shortcuts causing client crash 

Change prompt message when screen share not supported

Do not display "Lock viewers" option in breakouts

Screenshare: add support on Safari 13+ and make constraints configurable

Attempt to fix external video syncing

Only provide modOnlyMessage to moderators

 Format conference num

 - separate conf num with space instead of dash

 Initial work on more flexible formatting is being done in
  https://github.com/ritzalam/bigbluebutton/tree/format-voice-conf-number

 This just addresses complaints on mailing list that separating using '-'
 is confusing.

Refactor STUN/TURN fetch, remove 3rd party fallback STUNs, ...

Refactored STUN/TURN fetch to be done only once, when successful, per session and cache it in mem to avoid too many reqs. Current way is a bit dumb, this should increase reliability a bit more. The caching is configurable so folks who want to use very short lived TURN credentials can disable it

Add a fallback STUN config option to be used when the default STUN/TURN fetch fails

Clean the safari/no candidate generation pre flight check from 3rd party STUNs

Fix deadlock in audio join when STUN/TURN fetch failed

Removing 3rd party default STUN servers from those dependencies as to prevent unexpected behaviour