Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/controllers/admin/dashboard_controller.rb`:
  Upstream completely redesigned the admin dashboard.
  glitch-soc tracked extra features, but that list is
  gone.
  Followed upstram.
- `app/views/admin/dashboard/index.html.haml`
  Upstream completely redesigned the admin dashboard.
  glitch-soc tracked extra features, but that list is
  gone.
  Followed upstram.

app/javascript/core/admin.js

@@ -101,4 +101,24 @@ ready(() => {
 
   const registrationMode = document.getElementById('form_admin_settings_registrations_mode');
   if (registrationMode) onChangeRegistrationMode(registrationMode);
+
+  const React    = require('react');
+  const ReactDOM = require('react-dom');
+
+  [].forEach.call(document.querySelectorAll('[data-admin-component]'), element => {
+    const componentName  = element.getAttribute('data-admin-component');
+    const { locale, ...componentProps } = JSON.parse(element.getAttribute('data-props'));
+
+    import('../mastodon/containers/admin_component').then(({ default: AdminComponent }) => {
+      return import('../mastodon/components/admin/' + componentName).then(({ default: Component }) => {
+        ReactDOM.render((
+          <AdminComponent locale={locale}>
+            <Component {...componentProps} />
+          </AdminComponent>
+        ), element);
+      });
+    }).catch(error => {
+      console.error(error);
+    });
+  });
 });