SunInfo: add new Instant Answer for sunrise/sunset.
SunInfo: allow for question-form queries.

Also, add some more negative tests.
SunInfo: trim back location to two most specific bits
SunInfo: use less precise, but friendlier time.
SunInfo: wait until we're sure we have a DateTime to set tz.

We can eliminate the try, because once we've checked we have domething
in `$dt` it will be a DateTime. Presume we're smart enough to have
timezones in `$loc` which we can properly use.
SunInfo: create bizarre prose templating system.

Since I can't see what it looks like at the moment, I made it
crazy modular, extra emphasis on the crazy.
SunInfo: restyling.

Still not right, but perhaps salvageable.
SunInfo: iterating towards pretty.

Still not quite there, but perhaps @chrismorast is no longer vomiting.

Thanks to @mintsoft for the help.  Turns out that my previous hours of
trying similar things were undone by explicit `<br/s>` that I didn't
remember adding.  Sigh.

Outstanding questions:

- Is there a better way to pick max-width to avoid having it stretch too
  wide?
- Is there a theme-friendly way to pick the vertical separator (left
  border on right div) color?
- Don't I have a lot of repeated text for something which cascades?
SunInfo: add map pin.