Remove remnant verto screensharing and use kurento instead

set audio messages in a own function.

Change hand to pointer icon in Whiteboard toolbar.

Change status label to comply with client

Display open userlist on meeting join

Don't handle flash client direct messages in html5 client.

Fix problem on joining audio in Firefox

Follow up on #5327 and #5333

Fix clipped username in chat and user list

Also fixed error checkings

Follow up on the webcam swap/design

Upgrade red5 mar 18 2018

Raised max resolution for webcam constraints

Fix media tab indication on audio exit

Improved Chrome WebRTC screenshare constraints

Fix settings modal opening when you click to open userlist