FEATURE: Show FAQ at top of the hamburger until the user reads it

app/serializers/current_user_serializer.rb

@@ -30,12 +30,17 @@ class CurrentUserSerializer < BasicUserSerializer
              :dismissed_banner_key,
              :is_anonymous,
              :post_queue_new_count,
-             :show_queued_posts
+             :show_queued_posts,
+             :read_faq
 
   def include_site_flagged_posts_count?
     object.staff?
   end
 
+  def read_faq
+    object.user_stat.read_faq?
+  end
+
   def topic_count
     object.topics.count
   end