Wifi managers improvements (#503)

* Add parameters to wifi manager: gateway name and base topic
Enable to restart the ESP and erase the parameters by MQTT

main/config_BT.h

@@ -30,10 +30,10 @@ extern void setupBT();
 extern bool BTtoMQTT();  
 extern void MQTTtoBT(char * topicOri, JsonObject& RFdata);
 /*----------------------BT topics & parameters-------------------------*/
-#define subjectBTtoMQTT  Base_Topic Gateway_Name "/BTtoMQTT/"
-#define subjectMQTTtoBTset  Base_Topic Gateway_Name "/commands/MQTTtoBT/set"
+#define subjectBTtoMQTT  "/BTtoMQTT/"
+#define subjectMQTTtoBTset  "/commands/MQTTtoBT/set"
 #define TimeBtw_Read 55555 //define default time between 2 scans
-#define MinimumRSSI -90 //default minimum rssi value, all the devices below -90 will not be reported
+#define MinimumRSSI -100 //default minimum rssi value, all the devices below -90 will not be reported
 #define Scan_duration 10 //define the time for a scan
 #define HM-10
 //#define HM-11 // uncomment this line if you use HM-11 and comment the line above
@@ -43,7 +43,7 @@ extern void MQTTtoBT(char * topicOri, JsonObject& RFdata);
 
 /*-------------------HOME ASSISTANT ROOM PRESENCE ----------------------*/
 // if not commented Home presence integration with HOME ASSISTANT is activated
-#define subjectHomePresence Base_Topic "home_presence/" Gateway_Name // will send Home Assistant room presence message to this topic (first part is same for all rooms, second is room name)
+#define subjectHomePresence "home_presence/" // will send Home Assistant room presence message to this topic (first part is same for all rooms, second is room name)
 
 unsigned int BLEinterval ; //time between 2 scans
 int Minrssi ; //minimum rssi value