Gallery should be its own subdirectory, on the static site. 

With the current approach, there are two problems:

1) Media servers will have extraneous PHP files, and to display them will need mod_php (otherwise we could use some
HTTP server optimized for serving multimedia quickly)

2) redirects on the /uploads directory will break. This is currently done on Staughton reduce bandwidth usage even with
old links. Not a big deal, but it's better to do it this way.

I propose: /gallery is added as a new subdirectory to the static site. In the gallery directory, we can keep the year/month
tree, but only static php files are kept there. We need to make sure that the img src attribute points to the media
server correctly.