Add code to handle breakout rooms in html5

bigbluebutton-html5/client/stylesheets/bbb-icons.css

...utton-html5/imports/api/breakouts/server/eventHandlers.js

...uebutton-html5/imports/api/breakouts/server/publishers.js

bigbluebutton-html5/imports/locales/en.json

bigbluebutton-html5/imports/ui/components/app/container.jsx

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

...ts/ui/components/breakout-join-confirmation/component.jsx

...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

...luebutton-html5/imports/ui/components/nav-bar/styles.scss

bigbluebutton-html5/package.json

bigbluebutton-html5/server/main.js