Add a per-species bounding box count to the panoramas page

[r2d2bol]

Right now the bounding box column in the panoramas page (panoramas.html) only has a single number. Ideally, it should have a per-species count.

Something like Common Reed: 2 Wild Parsnip: 1

One on each line. If there are no bounding boxes for a particular species, don't add a line for it.

The html would look something like:

<td>
Common Reed: 2 <br />
Wild Parsnip: 1
</td>

[r2d2bol]

The code works but there's a bug. All the panoramas now display the same bounding box count.

see http://aflores.ucsd.edu:4567/panoramas.html