Warning modal now displays for iOS Chrome users

Use GetRecordingStatus message to start recordings from the bbb-webrtc-sfu side

User list fixed to display all users

Merge branch 'breakout-room-server-expiry' of https://github.com/riadvice/bigbluebutton into riadvice-breakout-room-server-expiry

Merge branch 'recording-timer' of https://github.com/riadvice/bigbluebutton into riadvice-recording-timer

RaP: Merge the sanity script from master branch

 - shorten timer to wait in case other red5 conn disconnect. Need to …

 - put back accidentally deleted log to show why screenshare failed t…

 - allow to configure using config.xml that region is default choice …

Due to improvements in the recording scripts, most of the stuff the sanity
script was checking for is no longer needed (missing/corrupt video files
are handled by the processing scripts). The version of this script in
master has been cleaned up so that the only things it does are:

- Check that the events.xml exists and is properly formatted xml
- Rebuild flv files from red5 .flv.ser/.flv.info files

The script from master is compatible with the 2.0 code, so just use it
as-is.

This fixes a problem where following the recent red5 upgrade in 2.0 branch,
an flv file is never written for webcam streams where no frames were
received, despite there being recording events.

 - make reconnect wait timer configurable. This timer waits for a period of time in case other connections
   disconnects before initiating reconnection. Default is 2 seconds.

 - shorten timer to wait in case other red5 conn disconnect. Need to initiate reconnect as soon as possible.

Tested, works well

Add a 64-bit check to the Firefox 60+ upload block

Temporarily disable uploading on Win Firefox 60+

 - add some kind of check to uploaded file

   NOTE: This doesn't fix issue with uploading file with FF 60 on Windows 10.

 - webrtc screenshare should not create another connection to red5 sc…