Feature(react): Move settings to React

common/app/routes/index.js

@@ -1,6 +1,7 @@
 import { modernChallenges, map, challenges } from './challenges';
 import NotFound from '../components/NotFound/index.jsx';
 import { addLang } from '../utils/lang';
+import settings from './settings';
 
 export default {
   path: '/:lang',
@@ -15,6 +16,7 @@ export default {
     challenges,
     modernChallenges,
     map,
+    settings,
     {
       path: '*',
       component: NotFound