func getImagesViz(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if version.GreaterThan("1.6") {
		w.WriteHeader(http.StatusNotFound)
		return fmt.Errorf("This is now implemented in the client.")
	}
	eng.ServeHTTP(w, r)
	return nil
}
func getInfo(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	w.Header().Set("Content-Type", "application/json")
	eng.ServeHTTP(w, r)
	return nil
}