Remove is_detour and little direct correction on review
Remove is_detour and little direct correction on review

CanalTP/navitia,kinnou02/navitia,xlqian/navitia,xlqian/navitia,CanalTP/navitia,xlqian/navitia,Tisseo/navitia,CanalTP/navitia,CanalTP/navitia,Tisseo/navitia,CanalTP/navitia,xlqian/navitia,kinnou02/navitia,Tisseo/navitia,Tisseo/navitia,kinnou02/navitia,xlqian/navitia,kinnou02/navitia,Tisseo/navitia