[HTML5 Client] Fix for the issue with users disappearing from userlist when hanging up audio.

Corrected a few labels missed in #4929 

Changed all the references of "kick" to "remove"

Update settings-production.json when assigning hostname

Merge branch 'v2.0.x-release' of https://github.com/bigbluebutton/bigbluebutton into hangup-audio-userlist-fix

WebRTC media updates

Change modal settings styles.

Disable webcam button in media column for all users when webcamsOnlyForModerator is on

Merge branch 'v2.0.x-release' of https://github.com/bigbluebutton/bigbluebutton into video-upstream-errors

Show moderator message header in bold

Delay showing confirmation buttons in WebRTCEchoTest under firefox

Fix ScreenshareViewWindow scroll-bars in original video size mode

Add screen to when the meeting is closed.

Fix audio loss on locale change

Fix alpha value for ScreenshareViewWindow change display button