Move all order logic to models

- Have a default order for each model
-- The overall default is ID DESC
- Allow for custom orderings
-- When comma-separated IDs are used

app/models/artist_commentary_version.rb

@@ -7,7 +7,6 @@ class ArtistCommentaryVersion < ApplicationRecord
 
   def self.search(params)
     q = super
-    return q if params.blank?
 
     if params[:updater_id]
       q = q.where("updater_id = ?", params[:updater_id].to_i)
@@ -17,7 +16,7 @@ class ArtistCommentaryVersion < ApplicationRecord
       q = q.where("post_id = ?", params[:post_id].to_i)
     end
 
-    q
+    q.apply_default_order(params)
   end
 
   def initialize_updater