[*] BO : groups attributes are now sortable

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@8683 b9a71923-0436-4b27-9f14-aed3839534dd

install-dev/sql/db.sql

@@ -91,6 +91,7 @@ CREATE TABLE `PREFIX_attribute` (
 CREATE TABLE `PREFIX_attribute_group` (
   `id_attribute_group` int(10) unsigned NOT NULL auto_increment,
   `is_color_group` tinyint(1) NOT NULL default '0',
+  `position` int(10) unsigned NOT NULL default '0',
   PRIMARY KEY  (`id_attribute_group`)
 ) ENGINE=ENGINE_TYPE DEFAULT CHARSET=utf8;