Add duplicate and clear submissions functionality for challenge chains; implement corresponding dialogs and API endpoints, enhancing user experience and task management. Update localization for new features in English and Russian.

bro.config.js

@@ -18,7 +18,7 @@ module.exports = {
   /* use https://admin.bro-js.ru/ to create config, navigations and features */
   navigations: {
     'challenge-admin.main': '/challenge-admin',
-    'link.challenge': '/challenge',
+    'link.challenge.main': '/challenge',
   },
   features: {
     'challenge-admin': {