search accounting period in the organisation

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5438 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingPeriod_init.xml

@@ -70,7 +70,7 @@
 
 portal = context.getPortalObject()\n
 \n
-period_list = portal.accounting_period_module\\\n
+period_list = context.getParentValue()\\\n
                             .searchFolder( simulation_state = [\'planned\', \'confirmed\', \'delivered\'],\n
                                                     sort_on = (\'delivery.stop_date\', \'ASC\'))\n
 \n