#35 pre-cache thumbnails

[Anonymous]

Make it so that the first time the page is loaded, it
pre-caches the photos of each size possible, so that
when users browse the page, it doesn't take multiple
seconds to load a photo. I am running ids on a slower
machine (300mhz.. I know, I know!) and the lag when
browsing photos is pretty bad.

I have implemented a beta-version that clones IDS in
java/jsp using mysql as a backend to store meta-data.
I know this is heavier than IDS is currently, but I did
it just to see what-if. The java version loads nearly
as fast as static html, because all it does is read the
metadata from the db and then throw up links to the
already-existing thumbnails.