Merge pull request #3838 from Klauswk/AddServerCallback

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

...on-html5/imports/api/users/server/modifiers/removeUser.js

...5/imports/ui/components/actions-bar/emoji-menu/service.js

...ports/ui/components/actions-bar/mute-button/container.jsx

bigbluebutton-html5/imports/ui/components/chat/service.js

bigbluebutton-html5/imports/ui/components/polling/service.js

...i/components/presentation/presentation-toolbar/service.js

...uebutton-html5/imports/ui/components/user-list/service.js

bigbluebutton-html5/imports/ui/services/api/index.js

bigbluebutton-html5/imports/ui/services/auth/index.js

...luebutton-html5/imports/ui/services/notification/index.js

...5/imports/ui/services/notification/notificationService.js