Rewrite admin. (#1713)

* Rewrite admin.

* Clean up password forms.

* Fix naming issues.

* CSS Naming.

pages/users/index.js

@@ -0,0 +1,20 @@
+import Settings from 'components/pages/Settings';
+import useConfig from 'hooks/useConfig';
+import useRequireLogin from 'hooks/useRequireLogin';
+import React from 'react';
+import UsersList from 'components/pages/UsersList';
+
+export default function UsersPage() {
+  const { loading } = useRequireLogin();
+  const { adminDisabled } = useConfig();
+
+  if (adminDisabled || loading) {
+    return null;
+  }
+
+  return (
+    <Settings>
+      <UsersList />
+    </Settings>
+  );
+}