This should solve the most severe cases of ghost webcams

Also removed unused class in video-dock css

Started standardizing video and screenshare RPC messages

Video now uses redis message routing

Also forcing h264-only video

Also added correct stop logic to the video process

Added chrome extension ID to HTML5 screenshare call

 Conflicts:
	bigbluebutton-html5/imports/startup/client/base.jsx
	bigbluebutton-html5/imports/ui/components/actions-bar/actions-dropdown/component.jsx
	bigbluebutton-html5/imports/ui/components/actions-bar/component.jsx
	bigbluebutton-html5/imports/ui/components/app/container.jsx
	bigbluebutton-html5/imports/ui/components/screenshare/service.js
	bigbluebutton-html5/imports/ui/components/video-dock/component.jsx
	bigbluebutton-html5/imports/ui/components/video-dock/container.jsx
	bigbluebutton-html5/private/locales/en.json bigbluebutton-html5/server/main.js

This is temporary while we fix the server-side message routing

Also made cam button respond to those config values

Fix presentation context menu when switching locale

Fixes settings service

settings service was missing a `||`

Improvements to the page move events

Fixed a bug with passing props to the polling container

Set initial locale to be the browser one