UX: move search to its own route

previously search was bundled with discovery, something that makes stuff confusing internally

config/locales/client.en.yml

@@ -881,6 +881,8 @@ en:
     search:
       title: "search topics, posts, users, or categories"
       no_results: "No results found."
+      no_more_results: "No more results found."
+      search_help: Search help
       searching: "Searching ..."
       post_format: "#{{post_number}} by {{username}}"
 

config/routes.rb

@@ -405,6 +405,7 @@ Discourse::Application.routes.draw do
 
   get "top" => "list#top"
   get "search/query" => "search#query"
+  get "search2" => "search#show"
 
   # Topics resource
   get "t/:id" => "topics#show"