changed: there is one dir called root (has parent_id -1)

(we have an owner, group, privileges etc of the root dir)
         the root.id of course is not -1 


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@468 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/config.cpp

@@ -103,7 +103,6 @@ void Config::AssignValues()
 	data.db_pass               = Text("db_pass");
 	data.base_url              = Text("base_url");
 	data.one_item_is_showed    = Bool("one_item_is_showed");
-	data.dirs.root.default_item = Int("dir.root.default_item");
 
 	data.priv_no_user  = Text("priv_no_user");
 	data.priv_no_group = Text("priv_no_group");