Improved mqttlog daemaon: persistent registered devices.

devices/tasmota_plug.xml

@@ -3,7 +3,7 @@
 <device name="tasmotaplug" driver="mqtt">
 
   <mqtttopics>
-    <mqtttopic type="json" direction="in" >
+    <mqtttopic type="json" name="sensor" direction="in" >
       <mask>tele/tasmota/*/SENSOR</mask>
       <beforeId>tele/tasmota/</beforeId>
       <afterId>/SENSOR</afterId>
@@ -20,7 +20,7 @@
 
     </mqtttopic>
 
-    <mqtttopic type="num" direction="out" >
+    <mqtttopic type="num" name="power" direction="out" >
       <beforeId>cmnd/tasmota/</beforeId>
       <afterId>/Power</afterId>