Remove old orientation code, add some configuration options for sfu

...-html5/imports/ui/components/video-provider/component.jsx

labs/bbb-webrtc-sfu/config/default.example.yml

labs/bbb-webrtc-sfu/lib/mcs-core/lib/constants/Constants.js

labs/bbb-webrtc-sfu/lib/mcs-core/lib/media/media-server.js

...bbb-webrtc-sfu/lib/mcs-core/lib/model/RecordingSession.js

labs/bbb-webrtc-sfu/lib/screenshare/screenshare.js

labs/bbb-webrtc-sfu/lib/video/VideoManager.js

labs/bbb-webrtc-sfu/lib/video/video.js