Can create devices nicely

static/scripts.js

@@ -0,0 +1,16 @@
+function newOption(elementId, name) {
+    var el = document.getElementById(elementId)
+    if (el.value !== "New...") {
+        return
+    }
+
+    var newValue = window.prompt("Enter " + name + " Name")
+    if (newValue === null) {
+        return;
+    }
+    var child = document.createElement("option")
+    child.value = newValue
+    child.innerText = newValue
+    el.prepend(child)
+    el.value = newValue
+}