fix chrome on ios blue screen after selecting share webcam / lint issues

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

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

...n-html5/imports/ui/components/video-preview/component.jsx

...n-html5/imports/ui/components/video-preview/container.jsx

...ton-html5/imports/ui/components/video-preview/styles.scss

bigbluebutton-html5/imports/utils/deviceInfo.js