it consists of last logged users added: function 'last' git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@492 e52654a7-88a9-db11-a3e9-0013d4bc506e
sessions are indexed by id and time (last used time) changed: old sessions are deleted parameter: session_max_iddle in the config file added: function 'who' git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@483 e52654a7-88a9-db11-a3e9-0013d4bc506e
git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@460 e52654a7-88a9-db11-a3e9-0013d4bc506e