added scanning networks text

static/app.js

@@ -3323,6 +3323,8 @@ function sendNetworkToSSID(element) {
 function scanNetworks() {
   var networksListReset = document.getElementById("networks-list");
   networksListReset.innerHTML = "";
+  var listItem2 = document.createElement("li");
+  listItem2.textContent = "Scanning networks...";
   fetch("/scanNetworks", {
     method: "PUT",
   })
@@ -3330,7 +3332,7 @@ function scanNetworks() {
     .then(data => {
       // Parse the response data as JSON
       var networks = JSON.parse(data);
-
+      networksListReset.innerHTML = "";
       // Iterate over the networks object and create list items
       for (var ssid in networks) {
         var listItem = document.createElement("li");