Merge branch 'v2.0.x-release' of github.com:bigbluebutton/bigbluebutton into current

...bigbluebutton/clientcheck/service/RTMPTunnelingService.as

...in/java/org/bigbluebutton/voiceconf/red5/Application.java

...tton/modules/screenshare/assets/sounds/ScreenshareOff.mp3

...utton/modules/screenshare/managers/ViewerWindowManager.as

...odules/screenshare/managers/WebRTCPublishWindowManager.as

...modules/screenshare/managers/WebRTCViewerWindowManager.as

...screenshare/view/components/ScreensharePublishWindow.mxml

...reenshare/view/components/WebRTCDesktopPublishWindow.mxml

...g/bigbluebutton/modules/users/services/MessageReceiver.as

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

bigbluebutton-config/bin/bbb-conf

bigbluebutton-html5/client/main.html

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

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

...l5/imports/api/users/server/handlers/validateAuthToken.js

...utton-html5/imports/api/users/server/modifiers/addUser.js

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

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

...ml5/imports/ui/components/chat/message-form/component.jsx

...html5/imports/ui/components/chat/message-form/styles.scss