Don't use the same or overlapping NickPrefix as StatusPrefix in the crypt module

Don't use the same or overlapping NickPrefix as StatusPrefix in the crypt module

Don't use a key which is a valid nickname, now changed to "@nick-prefix@" instead.
If you had loaded the crypt module before, the old settings will be converted.

Also check if the nick-prefix and status-prefix aren't the same or overlapping, "*" or "." are then used depending on either value. If they would be the same, you would be messaging a module instead of a user.
And if they'd overlap, depending on the nick, you could be messaging a module as well.