simpler handling of select boxes

Author: haarg

root/static/js/dropdown.js

@@ -1,5 +1,5 @@
 for (const el of document.querySelectorAll('.dropdown select')) {
-    el.addEventListener('change', e => {
-        document.location.href = e.target.value;
+    el.addEventListener('change', () => {
+        document.location.href = el.value;
     });
 }