Add tracking for YouTube videos #2156

This is a WIP. I'm tracking the following events right now

1. Load event for YouTube videos
2. Play/Paused/Buffering/Finished status of the video
3. Video Quality
4. Errors, reported by YouTube API
5. 10% increments of video played.
luke crouch wrote:
>
> @a2sheppy <https://github.com/a2sheppy>, @teoli2003 
> <https://github.com/teoli2003>, @chrisdavidmills 
> <https://github.com/chrisdavidmills> - what do you think? How much 
> work would it be to go thru ~96-100 pages with YouTube videos and add 
> |&enablejsapi=1&origin=| url params to them? Or should we make a KS 
> template for including YouTube videos?
>
Not a huge deal. I do think that a KumaScript macro is a good idea, 
although just making the YouTube embed button in the toolbar do the 
Right Thing will get us most of the way there.

-- 

Eric Shepherd