Merge pull request #4540 from ritzalam/update-with-20

...n/core/apps/users/UserConnectedToGlobalAudioMsgHdlr.scala

...utton/core/apps/voice/UserJoinedVoiceConfEvtMsgHdlr.scala

...main/scala/org/bigbluebutton/core/models/VoiceUsers.scala

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

...g/default/style/css/org/bigbluebutton/skins/ButtonSkin.as

...yle/css/org/bigbluebutton/skins/NumericStepperDownSkin.as

...style/css/org/bigbluebutton/skins/NumericStepperUpSkin.as

...ding/default/style/css/org/bigbluebutton/skins/TabSkin.as

bigbluebutton-client/locale/en_US/bbbResources.properties

bigbluebutton-client/resources/prod/lib/bbb_blinker.js

...ton-client/src/org/bigbluebutton/common/IKeyboardClose.as

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

bigbluebutton-client/src/org/bigbluebutton/main/api/JSAPI.as

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

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

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

.../src/org/bigbluebutton/main/views/ClientStatusWindow.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