[imp] Display date/time when viewing a message

[Chuck Hagenbuch]

Quoting Alexander Skwar <ASkwar@DigitalProjects.com>:

> BTW: IMO the default imp/config/conf.php.dist should be changed to
> return the locale's time and date string:
> 
> $conf['mailbox']['date_format'] = '%x';
> $conf['mailbox']['time_format'] = '%X';

Makes sense to me - done.

-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