Optimized fetching from aule.usi.ch

And btw Joey follow the modeline for indentation or I'll start using 3
spaces instead of 2

app.js

@@ -149,10 +149,7 @@ function setupTimeMachine() {
   setTimePreview(date);
 }
 
-(async () => {
-    for (const room of ROOMS) {
-        await buildRoomMarkup(room);
-    }
-})();
+// Thanks to Andrea Gallidabino and his mastery checks for this
+Promise.all(ROOMS.map(buildRoomMarkup)).catch(console.error);
 
 setupTimeMachine();

assets/index.css

@@ -1,4 +1,5 @@
 /* Inter font */
+/* vim: set ts=2 sw=2 et tw=80: */
 
 @font-face {
   font-family: 'Inter';

manifest.json

@@ -1,4 +1,6 @@
 {
+  "_modeline": " vim: set ts=2 sw=2 et tw=80:",
+
   "short_name": "USI Rooms",
   "name": "USI INF Rooms",
   "icons": [