Merge pull request #9542 from prlanzarin/upstream-2.2-safari-ss

...on-html5/imports/api/screenshare/client/bridge/kurento.js

...on-html5/imports/api/screenshare/client/bridge/service.js

...rts/ui/components/actions-bar/desktop-share/component.jsx

...button-html5/imports/ui/components/screenshare/service.js

bigbluebutton-html5/private/config/settings.yml

...luebutton-html5/public/compatibility/kurento-extension.js

bigbluebutton-html5/public/compatibility/kurento-utils.js