[ansel] Patch for setting order on image upload

[Ben Chavet]

> What did you change?  I did a cvs status for my current checkout and
> what's in the latest CVS available via rsyn and didn't see any files
> that had been modified outside of the ones I changed for the search page.

I added a 'date-uploaded' attribute to the image class. (line 526 of
Gallery.php)

> I don't have a problem putting it where you think is best, as long as
> the functionality gets added as it will help clear up a lot of confusion
> for users when they get inconsistent results from a reordered gallery
> that they then add new images to.

The gallery order part of your patch had already been committed by Chuck, so I
didn't mess with it.

--Ben