user accesslists: reword logging and hits for newer SA rule sets

user accesslists: reword logging and hits for newer SA rule sets

This commit adapts the sa-hits and the logging for the user
block/welcomelist to be consistent with the terms used in the
SpamAssassin 4.0 release, which tries to avoid some terms that might
be interpreted as racially charged.

This patch is a (small part) of the fix for #3755, which will be
addressed along with the upgrade to SpamAssassin 4.0 (to be
consistent with the (quite well thought-through) namings used by SA)

Keeping the USER_IN_BLACKLIST hit when loading the descriptions
catches mails put in quarantine before the patched version was
installed.

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
 [ T: slight commit message edit ]
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>