support adding an accounting period before any other

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@25777 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/WorkflowTemplateItem/portal_workflow/accounting_period_workflow/scripts/checkDates.xml

@@ -76,7 +76,7 @@ period_list = closing_period.getParentValue().searchFolder(\n
 for period in period_list:\n
   period = period.getObject()\n
   if period.getSimulationState() in valid_state_list:\n
-    if start_date <= period.getStopDate():\n
+    if start_date <= period.getStopDate() and not stop_date <= period.getStartDate():\n
       raise ValidationFailed, translateString(\n
           "${date} is already in an open accounting period.",\n
           mapping={\'date\': start_date})\n

bt5/erp5_accounting/bt/revision

-870
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+871
\ No newline at end of file