Timeline Wall: Updated backend URL

Author: igoroshko

config/default.js

@@ -167,7 +167,7 @@ module.exports = {
     SUBDOMAIN_PROFILE_CONFIG: [{
       groupId: '20000000', communityId: 'wipro', communityName: 'topgear', userProfile: 'https://topgear-app.wipro.com/user-details',
     }],
-    TIMELNE_EVENT_API: 'http://localhost:3001/v5/timeline-wall',
+    TIMELNE_EVENT_API: 'https://api.topcoder-dev.com/v5/timeline-wall',
   },
 
   /* Information about Topcoder user groups can be cached in various places.