[ansel] gallery ordering issue

[Heath S. Hendrickson]

Okay, I'm putting this out there to see if anyone else can verify this 
problem for me.

The code for honoring the datatree_order value is working as it should, 
but the value isn't actually being written when an image is being 
uploaded (at least not through the XP Publish interface).  Worse, the 
code that I wrote for the reorder function sets the order value (since 
it doesn't exist) to a sequentially incremented integer value starting 
at 1... so you end up with order value collisions... the end result 
being unpredictable.  If you never use the reorder function, then you 
just end up with some images with explicit orders set and other 
without... and this seems to have unpredictable results as well.

The best fix is to make sure that the order value is properly set when 
an image is uploaded (IMHO, anyway).  This would obviously be best done 
at the datatree driver level (right?)... and since that's used by lots 
of stuff, I'm leary of touching it.  Is the datatree_order field 
currently used by anyting other than Ansel?  If not, then I can make the 
patch to the Ansel functions and be done with it.

heath