[ZWeb] Product category sorting issue

[Michael Bernstein]

I've received several reports that Product category listings are not 
sortable by the Title column. This is due to the Title index being a 
ZCTextIndex.

As a temporary fix, I've changed the sorting for the Title column to use 
'id' instead. This is not strictly correct behavior, but it gives a 
reasonable approximation and eliminates the error message. Further work 
on Zope.org's Catalog will be required to fix the underlying problem.

-- 
- Michael R. Bernstein
   michaelbernstein.com
   A Zope.org Webmaster