* templatize the banhammer page
* allow permabanning and unbanning from the banhammer page
* log banning/unbanning somewhat better
* change in profile.php presentation: change last post link to make more sense, replace 'last known browser' by useragent for admins
* allow admins to see users' emails directly even if they are private (admins could just use edituser anyway)
* change homepage to not show the same thread a billion times if a thread has been posted in a lot
* make online.php not show useragents to unauthorized users