[turba] Delete confirmation patch

[Chuck Hagenbuch]

Quoting "W. David Betts" <david at populus.com>:

> We have been playing around with Turba and really love it, great jobs guys.
> If anyone is interested we have added a JavaScript delete confirmation dialog
> that can be toggled in the preferences page.  Patches to the /config and
> /templates/browse directories are attached.

Committed, thanks!

-chuck

--
Charles Hagenbuch, <chuck at horde.org>
"I'm really... I'm not too fascinated by green food." - Average Joe