Frontend user list and modal dialog fixes

src/frontend/js/app/main.js

@@ -12,13 +12,17 @@ const UI         = require('./ui/main');
 
 const App = Mn.Application.extend({
 
-    region:     '#app',
     Cache:      Cache,
     Api:        Api,
     UI:         null,
     Controller: Controller,
     version:    null,
 
+    region: {
+        el:             '#app',
+        replaceElement: true
+    },
+
     onStart: function (app, options) {
         console.log('Welcome to Nginx Proxy Manager');