Merge remote-tracking branch 'upstream/v2.0.x-release' into fix-design

...g/bigbluebutton/core/apps/users/UserLeaveReqMsgHdlr.scala

bigbluebutton-client/locale/en_US/bbbResources.properties

bigbluebutton-client/src/org/bigbluebutton/core/PopUpUtil.as

...c/org/bigbluebutton/main/views/CameraDisplaySettings.mxml

...nt/src/org/bigbluebutton/main/views/FlashMicSettings.mxml

...-client/src/org/bigbluebutton/main/views/GuestWindow.mxml

...client/src/org/bigbluebutton/main/views/LockSettings.mxml

...client/src/org/bigbluebutton/main/views/LogoutWindow.mxml

...rc/org/bigbluebutton/main/views/MainApplicationShell.mxml

...-client/src/org/bigbluebutton/main/views/MainToolbar.mxml

...client/src/org/bigbluebutton/main/views/RecordButton.mxml

...lient/src/org/bigbluebutton/main/views/WaitingWindow.mxml

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

.../bigbluebutton/modules/present/managers/PresentManager.as

...uebutton/modules/present/ui/views/FileDownloadWindow.mxml

...bluebutton/modules/present/ui/views/FileUploadWindow.mxml

...uebutton/modules/present/ui/views/PresentationWindow.mxml

...rc/org/bigbluebutton/modules/users/views/UsersWindow.mxml

...tml5/imports/api/voice-users/server/methods/muteToggle.js

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