New annotation, because of db switch to mysql.

Background: sqlite has some problems with decimal option.

app/models/group_order_article.rb

@@ -159,15 +159,16 @@ class GroupOrderArticle < ActiveRecord::Base
   
 end
 
+
 # == Schema Information
 #
 # Table name: group_order_articles
 #
-#  id               :integer         not null, primary key
-#  group_order_id   :integer         default(0), not null
-#  order_article_id :integer         default(0), not null
-#  quantity         :integer         default(0), not null
-#  tolerance        :integer         default(0), not null
+#  id               :integer(4)      not null, primary key
+#  group_order_id   :integer(4)      default(0), not null
+#  order_article_id :integer(4)      default(0), not null
+#  quantity         :integer(4)      default(0), not null
+#  tolerance        :integer(4)      default(0), not null
 #  updated_on       :datetime        not null
 #  result           :decimal(8, 3)
 #