To swap presentation with video we need to retrieve what was the current viewbox size and set it again.

Fixes #3545

JoinAudio Modal UI Update

Closed Captions

html5client: fix handling of recording message

 - fix locale causing build to fail

 - updating locales

Support svc2 in screen share

Fix recording playback hang in Firefox

Chrome frame has been discontinued for quite a while. The playback code actually
does work in IE if you install an extra codec pack or switch the video format used.

Due to the extra delays added by setting up the closed captions, it happens more
often that the writing.js code will attempt to initialize popcorn on the video
element before the video element actually exists on the page.

(This was always a problem, it's just worse now)

Add a synchronization point which will delay the popcorn initialization until the
video element is ready.

This can create weird conflicts when using other libraries

Updating API demos for 1.1-beta -- removing older demos no longer used

bbb-client-check WebRTCEchoTest:change voiceBridge from "undefined" to ""

Bbb-client-check add missing functions for WebRTCEchoTest

Bumped the copyright date on index.html

 - add svc2 codec lib for macos

Webcams only for moderator

Support svc2 in screen share