Dirty hacks.
Fixup TextTrack wiring so we don't have null TextTrackList in media element.  Builds, no subtitles yet.
Fixes, plus printfs for all the update stuff.
Fix time unit issue between parser and dom, add more printfs
Subtitles show now, cues created properly
THIS IS SPARTA
Hack the CSS to make the titles display approximately correct.

The css for the anonymous content relies on double-nesting
for correctly wrapping the caption text and aligning it at
the bottom of the video frame (I think) but the code isn't
wrapping it in a <p> so that doesn't work.

Instead, manually add enough padding so that it shows in
a reasonable position on the presentation page. Note from
the value I suspect we might be calculating some sizes
incorrectly for the anonymous caption div.