Show topics as a list of topics on the User Stream.

config/routes.rb

@@ -201,6 +201,7 @@ Discourse::Application.routes.draw do
   post 't' => 'topics#create'
   post 'topics/timings'
   get 'topics/similar_to'
+  get 'topics/created-by/:username' => 'list#topics_by', as: 'topics_by', constraints: {username: USERNAME_ROUTE_FORMAT}
 
   # Legacy route for old avatars
   get 'threads/:topic_id/:post_number/avatar' => 'topics#avatar', constraints: {topic_id: /\d+/, post_number: /\d+/}