Merge pull request #3769 from Gcampes/settings-refactor

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

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

...ml5/imports/ui/components/chat/notification/container.jsx

...on-html5/imports/ui/components/closed-captions/service.js

...button-html5/imports/ui/components/settings/component.jsx

...button-html5/imports/ui/components/settings/container.jsx

...luebutton-html5/imports/ui/components/settings/service.js

...omponents/settings/submenus/closed-captions/component.jsx

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

bigbluebutton-html5/private/config/public/app.yaml