Merge branch 'v2.0.x-release' of https://github.com/bigbluebutton/bigbluebutton into fix-issue-4897

bigbluebutton-client/branding/default/style/css/V2Theme.css

bigbluebutton-client/resources/prod/lib/kurento-extension.js

...ient/src/org/bigbluebutton/main/views/WebRTCEchoTest.mxml

...bigbluebutton/modules/chat/views/ChatMessageRenderer.mxml

...es/screenshare/view/components/ScreenshareViewWindow.mxml

.../bigbluebutton/modules/users/views/MediaItemRenderer.mxml

bigbluebutton-config/bin/bbb-conf

bigbluebutton-html5/client/main.html

bigbluebutton-html5/imports/startup/client/auth.js

bigbluebutton-html5/imports/startup/client/base.jsx

bigbluebutton-html5/imports/startup/client/routes.js

bigbluebutton-html5/imports/ui/components/app/container.jsx

.../imports/ui/components/audio/audio-controls/component.jsx

...luebutton-html5/imports/ui/components/audio/component.jsx

...luebutton-html5/imports/ui/components/audio/container.jsx

...on-html5/imports/ui/components/error-screen/component.jsx

...n-html5/imports/ui/components/meeting-ended/component.jsx

...ton-html5/imports/ui/components/meeting-ended/styles.scss

...-html5/imports/ui/components/modal/fullscreen/styles.scss

...button-html5/imports/ui/components/settings/component.jsx