if rules change, remove parsefloat and insert script in html to remove SunriseSunset when no data exist.

tools/esp8266/html/index.html

@@ -18,8 +18,12 @@
             </p>
             <p><span class="des">Uptime: </span><span id="uptime"></span></p>
             <p><span class="des">ESP-Time: </span><span id="date"></span></p>
-            <p><span class="des">Sunrise: </span><span id="sunrise"></span></p>
-            <p><span class="des">Sunset: </span><span id="sunset"></span></p>
+            <div id="sun">
+                <span class="des">Sunrise: </span><span id="sunrise"></span><br>
+                <span class="des">Sunset: </span><span id="sunset"></span>
+            </div>
+            
+
             <p><span class="des">RSSI: </span><span id="wifi_rssi"></span>dBm</p>
             <p>
                 <span class="des">Statistics: </span>
@@ -69,6 +73,11 @@
                 document.getElementById("date").innerHTML = date.toLocaleString('de-DE', {timeZone: 'UTC'});
                 document.getElementById("sunrise").innerHTML = sunrise.toLocaleString('de-DE', {timeZone: 'UTC'});
                 document.getElementById("sunset").innerHTML = sunset.toLocaleString('de-DE', {timeZone: 'UTC'});
+                
+                if(!obj["ts_sun_upd"]) {
+                    var elem = document.getElementById("sun");
+                    elem.parentNode.removeChild(elem);
+                }
             }
 
             function parseStat(obj) {

tools/esp8266/html/setup.html

@@ -252,8 +252,8 @@
 
             function parseSun(obj) {
                 document.getElementsByName("sunDisNightCom")[0].checked = obj["disnightcom"] ? true : false;
-                document.getElementsByName("sunLat")[0].value = parseFloat(obj["lat"]);
-                document.getElementsByName("sunLon")[0].value = parseFloat(obj["lon"]);
+                document.getElementsByName("sunLat")[0].value = obj["lat"];
+                document.getElementsByName("sunLon")[0].value = obj["lon"];
             }
 
             function parsePinout(obj) {

tools/esp8266/web.cpp

@@ -273,9 +273,16 @@ void web::showSave(AsyncWebServerRequest *request) {
         }
 
         // sun
-        if(request->arg("sunDisNightCom") != "") mConfig->sunDisNightCom = (request->arg("sunDisNightCom") == "on");
-        if(request->arg("sunLat") != "") mConfig->sunLat = request->arg("sunLat").toFloat();
-        if(request->arg("sunLon") != "") mConfig->sunLon = request->arg("sunLon").toFloat();
+        if(request->arg("sunLat") == "" || (request->arg("sunLon") == "")) {
+            mConfig->sunLat = 0.0;
+            mConfig->sunLon = 0.0;
+            mConfig->sunDisNightCom = false;
+        } else {
+            mConfig->sunLat = request->arg("sunLat").toFloat();
+            mConfig->sunLon = request->arg("sunLon").toFloat();
+            mConfig->sunDisNightCom = (request->arg("sunDisNightCom") == "on");
+        }
+        
 
         // mqtt
         if(request->arg("mqttAddr") != "") {