Boiler: sort values, delete doubles, thermostat: add mode to change temp

src/emsesp.cpp

@@ -824,6 +824,7 @@ void EMSESP::loop() {
         txservice_.loop(); // check that the Tx is all ok
         shower_.loop();    // check for shower on/off
         sensors_.loop();   // this will also send out via MQTT
+        delay(MYESP_DELAY); // some time to WiFi and everything else to catch up, calls yield, and also prevent overheating
 
         // force a query on the EMS devices to fetch latest data at a set interval (1 min)
         if ((uuid::get_uptime() - last_fetch_ > EMS_FETCH_FREQUENCY)) {