[imp] No user option changes stick until creation of a new identity

[amy.rich@tufts.edu]

kevin_myer> I've had similar problems when setting fullname and from_addr with
kevin_myer> hooks and the preferences not getting saved.  I lock identities
kevin_myer> and the fullname and from_addr preferences.  Unlocking the last
kevin_myer> two served as a workaround, but maybe the problem has to do with
kevin_myer> working with the default identity.  I didn't have a chance to
kevin_myer> fully isolate the problem here, but your information leads me to
kevin_myer> believe it might be the same thing I'm seeing.

Interesting... I don't have any of them locked, though (from
horde/config/prefs.php):

$_prefs['default_identity'] = array(
    'value' => 0,
    'locked' => false,
    'shared' => true,
    'type' => 'enum',
    'enum' => (isset($identity) && is_object($identity)) ? $identity->getAll('id') : array(),
    'desc' => _("Your default identity:")
);

$_prefs['id'] = array(
    'value' => '',
    'locked' => false,
    'shared' => true,
    'type' => 'text',
    'desc' => _("Identity's name:")
);

$_prefs['fullname'] = array(
    'hook' => true,
    'value' => '',
    'locked' => false,
    'shared' => true,
    'type' => 'text',
    'desc' => _("Your full name:")
);

$_prefs['from_addr'] = array(
    'hook' => true,
    'value' => '',
    'locked' => false,
    'shared' => true,
    'type' => 'text',
    'desc' =>  _("Your From: address:")
);