Add timeout waiting for response from FreeSWITCH when sending ESL command

 - When waiting for a response from FS after sending an ESL command and the ESL connection disconnects,
   the sending thread will be blocked as the trigger for it to unblock is the response from FS which never
   comes.

   Add a 30 second timesout waiting for response and give up to go send a new FS ESL command.

Bump to RC6

Fix race condition in video-provider that may cause peers to fail

The peer object was being fetched only once in the ICE candidate callback, and it would fetch a placeholder empty object (sometimes) which would be kept in the callback closure till the end of the peer lifecycle. With that, the didSDPAnswered state variable which released the outbound ICE queue wouldnt be correctly read and the queue would never be flushed

Add bbb_show_participants_on_login as a join parameter

Remove checks for SWF tools

Pulled html5 client locales for BBB 2.2 on Jan 17, 2020

Add the meetingId to the external video sync update logs

Fix streamer not working on meteor restart

Adjust external video logs

Trying to fix external video sync problems

The problem was caused when meteor restarted without reloading the page,
the ddp subscription called a onStop event that set all handlers to undefined
after we set the handlers on the init function.

Make the client end the call when kicked

Update SourceSansPro font files to support more languages.

Store FreeSwitch logs in bbb-conf --zip.

Store more logs with bbb-conf --zip

Log the selected sip.js candidate

Prevent parallel screenshare and external-video

bump to RC5