Improve low power mode (#859)

-add switch on HASS
-avoid issue when using ESPWifiManualSetup
-Correct issue on gateway discovery on first connect
-stop processing during discovery

main/ZgatewayRF.ino

@@ -51,7 +51,7 @@ void RFtoMQTTdiscovery(SIGNAL_SIZE_UL_ULL MQTTvalue) { //on the fly switch creat
                   will_Topic, switchRF[3], switchRF[4],
                   switchRF[5], switchRF[6], switchRF[7],
                   0, "", "", true, subjectMQTTtoRF,
-                  "", "", "", "");
+                  "", "", "", "", false);
 }
 #  endif