Merge pull request #4497 from Gcampes/audio-refactor

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

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

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

...luebutton-html5/imports/api/audio/client/manager/index.js

bigbluebutton-html5/imports/api/bbb/index.js

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

...ton-html5/imports/ui/components/actions-bar/component.jsx

...mports/ui/components/actions-bar/emoji-menu/component.jsx

.../imports/ui/components/actions-bar/emoji-menu/styles.scss

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

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

...utton-html5/imports/ui/components/actions-bar/styles.scss

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

.../imports/ui/components/audio/audio-controls/component.jsx

.../imports/ui/components/audio/audio-controls/container.jsx

...l5/imports/ui/components/audio/audio-controls/styles.scss

...tml5/imports/ui/components/audio/audio-menu/component.jsx

...tml5/imports/ui/components/audio/audio-menu/container.jsx

...ml5/imports/ui/components/audio/audio-modal/component.jsx

...ml5/imports/ui/components/audio/audio-modal/container.jsx