I'm an Animefan from Germany.
<root>/<wiki>/languages/messages/MessagesEn.php
change:
'sidebar' => ' * navigation ** mainpage|mainpage ** portal-url|portal ** currentevents-url|currentevents ** recentchanges-url|recentchanges ** randompage-url|randompage ** helppage|help ** sitesupport-url|sitesupport',
to
'sidebar' => ' * navigation ** mainpage|mainpage ** recentchanges-url|recentchanges ** randompage-url|randompage * AniDB-Navigation ** main-url|AniDB ** forum-url|Forum ** tracker-url|Tracker ** svn-url|SVN', 'main-url' => 'http://static.anidb.net', 'forum-url' => 'http://forum.anidb.net', 'tracker-url' => 'http://tracker.anidb.info', 'svn-url' => 'http://dev.anidb.info/websvn/listing.php?repname=AniDB+CSS&path=%2Ftrunk%2F&rev=0&sc=0',