[ansel] Patches for gallery image reordering

[Ben Chavet]

I made some slight adjustments to reorder.php to redirecte back to the gallery
when finished reordering.

Commited, thanks!

--Ben

Quoting "Heath S. Hendrickson" <heath at outerspaceconsultants.com>:

> Attached are patches and new files to add gallery reording to Ansel.
>
> New Files:
>     reorder.php
>     templates/view/reorderHeader.inc
>
> Modified File:
>     templates/view/gallery.inc
>
> I implemented the gallery display ordering via the gallery.inc file.  It
> would have been major surgery to change the DataTree driver, and this
> works well enough.  It's easy to remove once the DataTree driver has
> been updated and tested.
>
> I also made it so that if an explicit order wasn't set for a gallery,
> that it still functions as it has, meaning that there is no update to
> the database necessary...
>
> Thanks,
> h