[dev] Fullname hook suggestion

[Chuck Hagenbuch]

Quoting Atif Ghaffar <aghaffar@developer.ch>:

> Is Identity pref part of horde prefs or imp prefs?

Horde (it's a shared pref). Look at what I just committed.

> What about if there is an installation of Horde with modules other than
> IMP.

We need some of the identity interface elsewhere, but it'll still work; it 
shows just the username by default.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"What was and what may be, lie, like children whose faces we cannot see, in 
the arms of silence. All we ever have is here, now." - Ursula K. Le Guin