include thingspeak data processing.

Following data shall be updated in the code to make it work:
const char* channelID = "*****";
char ssid[] = "***";      //  your network SSID (name) // TODO : shall be configurable from webserver
char pass[] = "**";   // your network password // TODO : shall be configurable from webserver

TODO:
- wifi connection failure to be enhanced, ESP.restart  does not reboot properly, stuck in "wdt reset" mode :-(
- wifi parameters shall be configurable
- thingspeak channelid  hall be configurable

firmware/Trender/Page_ThingSpeak.h

@@ -74,11 +74,12 @@ void send_thingspeak_values_html ()
 
   String values ="";
 
-  values += "x_channelid|" + (String)myThingSpeakChannel +  "|div\n";
+  values += "x_channelid|" + (String)channelID +  "|div\n";
   server.send ( 200, "text/plain", values);
   Serial.println(__FUNCTION__);
 
   thingSpeakMode=1;
+  tkt.detach();