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/db.cpp

@@ -932,7 +932,7 @@ void Db::GetDirs(DirContainer & dir_table)
 		AssertConnection();
 
 		std::ostringstream query;
-		query << "select * from core.item left join core.content on item.content_id = content.id where type='0';";
+		query << "select * from core.item where type='0';";
 		
 		r = AssertQuery( query.str() );
 		AssertResultStatus(r, PGRES_TUPLES_OK);
@@ -954,7 +954,6 @@ void Db::GetDirs(DirContainer & dir_table)
 	}
 	
 	ClearResult(r);
-	
 }