Fix the delete button

app/static/common-admin.js

@@ -3,7 +3,9 @@ document.addEventListener('DOMContentLoaded', (ev) => {
   var forms = document.getElementsByClassName("object-delete-form")
   for (var i = 0; i < forms.length; i++) {
     forms[i].addEventListener('submit', (ev) => {
-      return confirm('Do you really want to delete this object?');
+      if (!confirm('Do you really want to delete this object?')) {
+        ev.preventDefault();
+      };
     });
   }
 });