Added Searching Features

* Added Thread Search Feature

* Added User Search Feature

* Re-organized searching, added @mention support to author search

app/helpers/mailer_helper.rb

@@ -24,4 +24,4 @@ module MailerHelper
       end
     end
   end
-end
+end

app/helpers/users_helper.rb

@@ -52,4 +52,4 @@ module UsersHelper
     end
   end
 
-end
+end