**Milestone:**
[Facebook Support](https://github.com/lejenome/html5-video-everywhere/milestones/Facebook%20Support)

**URL:**
- [x] `facebook.com/video?v=<VIDEO_ID>`
- [x] `www.facebook.com/video?v=<VIDEO_ID>`
- [x] `beta.facebook.com/video?v=<VIDEO_ID>`
- [x] `facebook.com/<USERNAME>/videos/<VIDEO_ID>`

**IN PAGE EVENTS:**
- [ ] showing a video on the PhotoViewer dialog
