[horde] Forms/Link valid for 30 min only

[Chuck Hagenbuch]

Quoting Paul Faure <faurep at AGR.GC.CA>:

> Any reason why forms are only valid for 30 min?
>
> /imp/lib/IMP.php:2091
>
> "This request cannot completed because the link you followed or the form
> you submitted was only valid for half an hour"

To prevent cross-site request forgery.

> I quite often open new mail in a new window and sometimes dont get
> around to looking at it or deleting it for 30 min, then I get this
> message. This didnt happen in earlier version.
>
> Could it be a configuration option instead of hard coded?

I don't see a particular reason not to make it configurable. Patch?

-chuck