[imp] patch for blacklist

[Chuck Hagenbuch]

Quoting Florent AIDE <faide at alphacent.com>:

> here is a patch that renders the blacklist link optional so we can choose
> if we want it or not to appear in the mailbox and in the message itself.

I would be more inclined to consider this as part of a general "Advanced UI"
preference, with which users/admins could turn on and off a whole set of
advanced features. Such was requested in the past, and I never quite got
around to getting behind it, but there's enough there now that I can see the
need.

-chuck

--
Charles Hagenbuch, <chuck at horde.org>
must ... find ... acorns ... *thud*