tribune 6.x-1.4

• Fix history style and highlighting ;
• Fix block style ;
• Fix calls to "undefined" pages ;
• It is now possible to have a list of active users (approximate: registered users and anonymous users who have used /nick and who have visited the tribune in the last five minutes), either by using the new "Tribune users" block, the "active_users" filter, or directly in code using the tribune_get_active_users() function.

Also, a repository for filters is now available at http://tout.essaye.sauf.ca/filter — it does not have many filters yet, but hopefully the collection will grow.