Add ability to use nested only parameter

- The only string works much the same as before with its comma separation
-- Nested includes are indicated with square brackets "[ ]"
-- The nested include is the value immediately preceding the square brackets
-- The only string is the comma separated string inside those brackets
- Default includes are split between format types when necessary
-- This prevents unnecessary includes from being added on page load
- Available includes are those items which are allowed to be accessible to the user
-- Some aren't because they are sensitive, such as the creator of a flag
-- Some aren't because the number of associated items is too large
- The amount of times the same model can be included to prevent recursions
-- One exception is the root model may include the same model once
--- e.g. the user model can include the inviter which is also the user model
-- Another exception is if the include is a has_many association
--- e.g. artist urls can include the artist, and then artist urls again

app/logical/application_responder.rb

@@ -17,7 +17,7 @@ class ApplicationResponder < ActionController::Responder
       options[:root] ||= resource.table_name.dasherize if resource.respond_to?(:table_name)
     end
 
-    options[:only] ||= params["only"].scan(/\w+/) if params["only"]
+    options[:only] ||= params["only"] if params["only"]
 
     super
   end

app/logical/post_sets/post.rb

@@ -109,15 +109,13 @@ module PostSets
         else
           temp = ::Post.tag_match(tag_string).where("true /* PostSets::Post#posts:2 */").paginate(page, :count => post_count, :limit => per_page)
         end
-
-        # HACK: uploader_name is needed in api responses and in data-uploader attribs (visible to mods only).
-        temp = temp.includes(:uploader) if !is_random? && (format.to_sym != :html || CurrentUser.is_moderator?)
-
-        temp.each # hack to force rails to eager load
-        temp
       end
     end
 
+    def posts=(set_posts)
+      @posts = set_posts
+    end
+
     def unknown_post_count?
       post_count == Danbooru.config.blank_tag_search_fast_count
     end