Support loading the HTML5 main JS file and its assets from a CDN.

bigbluebutton-html5/.meteor/packages

bigbluebutton-html5/.meteor/versions

bigbluebutton-html5/imports/startup/server/index.js

...-html5/imports/ui/components/activity-check/component.jsx

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

...mports/ui/components/chat/alert/audio-alert/component.jsx

...ebutton-html5/imports/ui/components/polling/component.jsx

...orts/ui/components/video-provider/video-button/service.js

...d/whiteboard-overlay/pan-zoom-draw-listener/component.jsx

...ard/whiteboard-overlay/pencil-draw-listener/component.jsx

...oard/whiteboard-overlay/shape-draw-listener/component.jsx

...board/whiteboard-overlay/text-draw-listener/component.jsx

bigbluebutton-html5/private/config/settings.yml