Rework MischLabs into service dashboard

sw.js

@@ -1,9 +1,11 @@
-const CACHE_NAME = 'mischlabs-pwa-v2';
+const CACHE_NAME = 'mischlabs-pwa-v3';
 const APP_SHELL = [
   '/',
   '/index.html',
-  '/style.css?v=8',
-  '/manifest.webmanifest?v=2',
+  '/offline.html',
+  '/style.css?v=9',
+  '/app.js?v=1',
+  '/manifest.webmanifest?v=3',
   '/icons/icon-192.png',
   '/icons/icon-512.png',
   '/icons/apple-touch-icon-v2.png'
@@ -34,7 +36,7 @@ self.addEventListener('fetch', (event) => {
 
   if (request.mode === 'navigate') {
     event.respondWith(
-      fetch(request).catch(() => caches.match('/index.html'))
+      fetch(request).catch(() => caches.match('/offline.html'))
     );
     return;
   }