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/ban.rb

@@ -27,7 +27,6 @@ class Ban < ApplicationRecord
 
   def self.search(params)
     q = super
-    return q if params.blank?
 
     if params[:banner_name]
       q = q.where("banner_id = (select _.id from users _ where lower(_.name) = ?)", params[:banner_name].mb_chars.downcase)
@@ -58,7 +57,7 @@ class Ban < ApplicationRecord
     when "expires_at_desc"
       q = q.order("bans.expires_at desc")
     else
-      q = q.order("bans.id desc")
+      q = q.apply_default_order(params)
     end
 
     q