First and foremost, the mime type has to be supported by the web
server. Either you have to add a `.vtt` mimetype, *or* just put it
as a `.txt` file. I chose the latter since it doesn't require a
custom Apache configuration.
Second, even if you make it a `.txt` file, using a CDN does not seem
to work. I suspect that maybe CDNs do really weird things with
mimetypes when they server them, or maybe the <track> element just
really doesn't like it when the URL is 301'd. 🤷
Anyway, with these two changes: using a `.txt` file, and hosting the
file locally, the subtitles now work properly!
Note, if you use the `default` attribute in the <track> tag, it'll
turn them on by default. Leaving it off does allow the user to turn
them on in my tests in both Chromium and Firefox.
Link to the Youtube version for browsers where <video> element
doesn't work.
Note on the sustainer page that folks should watch it to learn about
us.
Widen into the big box on front page.
This is a first draft of making another bar appear after the
completed "matched!" bar that will show how much extra we've gotten
beyond the match amount.
This tag marks a variable as not requiring escaping by the template engine,
potentially creating cross-site scripting vulnerabilities, so shouldn't be used
unless absolutely necessary. In these cases, I don't think it's necessary.
