Merge pull request #6734 from Tainan404/issue-6666

.../imports/api/breakouts/server/handlers/breakoutJoinURL.js

...l5/imports/api/breakouts/server/methods/requestJoinURL.js

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

bigbluebutton-html5/imports/api/users/server/publishers.js

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

...button-html5/imports/ui/components/actions-bar/service.js

...ebutton-html5/imports/ui/components/nav-bar/component.jsx

...ebutton-html5/imports/ui/components/nav-bar/container.jsx

bigbluebutton-html5/imports/ui/components/nav-bar/service.js

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