Fix menu in settings/admin pages

app/javascript/flavours/glitch/packs/settings.js

@@ -0,0 +1,20 @@
+import loadPolyfills from 'flavours/glitch/util/load_polyfills';
+import ready from 'flavours/glitch/util/ready';
+
+function main() {
+  const { delegate } = require('rails-ujs');
+
+  delegate(document, '.sidebar__toggle__icon', 'click', () => {
+    const target = document.querySelector('.sidebar ul');
+
+    if (target.style.display === 'block') {
+      target.style.display = 'none';
+    } else {
+      target.style.display = 'block';
+    }
+  });
+}
+
+loadPolyfills().then(main).catch(error => {
+  console.error(error);
+});

app/javascript/flavours/glitch/theme.yml

@@ -18,7 +18,7 @@ pack:
   mailer:
   modal:
   public: packs/public.js
-  settings:
+  settings: packs/settings.js
   share: packs/share.js
 
 #  (OPTIONAL) The directory which contains localization files for