Merge pull request #10534 from mariogasparoni/v2.2.x-release

bigbluebutton-html5/client/main.html

...uebutton-html5/imports/api/audio/client/bridge/kurento.js

bigbluebutton-html5/imports/api/audio/client/bridge/sip.js

...ml5/imports/ui/components/audio/audio-modal/component.jsx

...uebutton-html5/imports/ui/services/audio-manager/index.js

bigbluebutton-html5/imports/utils/sdpUtils.js

bigbluebutton-html5/private/config/settings.yml

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

bigbluebutton-html5/public/compatibility/sip.js