[dev] Category sql backend

[Chuck Hagenbuch]

Quoting Carlos Pedrinaci <cpedrinaci at yahoo.es>:

> This is a patch for correcting an error in the _load method. The method
> did not treat correctly the possibility that many categories had the
> same short name. Thus, it just loaded the first one obtained from
> querying the db for all the categories that had such a short name.

Committed, thanks!

-chuck

--
Charles Hagenbuch, <chuck at horde.org>
Born right the first time.