changes to styles and texts in audio flow

...uebutton-html5/imports/api/2.0/audio/client/bridge/sip.js

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

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

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

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

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

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

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

...rts/ui/components/audio/audio-stream-volume/component.jsx

...-html5/imports/ui/components/audio/audio-test/styles.scss

...n-html5/imports/ui/components/audio/echo-test/styles.scss

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

...uebutton-html5/imports/ui/services/audio-manager/index.js

bigbluebutton-html5/private/locales/en.json