[horde] New horde_category_attributes

[Rick Emery]

Quoting Chuck Hagenbuch <chuck at horde.org>:

> Quoting Rick Emery <rick at emery.homelinux.net>:
>
> > When I look in the horde_categories table, it looks like everything is
> > there as it was, but the new horde_category_attributes table is empty. It
> > seems I've missed a step in the migration?
>
> Did you change $live = true in migrate_categories.php?

I did after Eric reminded me of your commit message (which I had saved; just
failed to refer back to it). It worked like a champ, thanks.

Rick