accounting: make grouping alarm more robust

When there was parallel execution of this alarm with lots of non grouped lines, it can happen that lines are grouped but not indexed yet.

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/Alarm_checkPayableAndReceivableAccountGrouped.py

@@ -41,14 +41,15 @@ for brain in portal.portal_simulation.getInventoryList(**search_params):
       grouped_line_list = tr.AccountingTransaction_guessGroupedLines()
       if not grouped_line_list:
         # Group whatever can be grouped. XXX maybe we want to make this optional.
-        grouped_line_list = tr.AccountingTransaction_guessGroupedLines(accounting_transaction_line_uid_list=[
+        grouped_line_list = tr.AccountingTransaction_guessGroupedLines(
+          accounting_transaction_line_uid_list=[
             line.uid for line in portal.portal_simulation.getMovementHistoryList(
                                     node_uid=brain.node_uid,
                                     mirror_section_uid=brain.mirror_section_uid,
                                     section_uid=section_uid_list,
                                     simulation_state=('stopped', 'delivered'),
                                     portal_type=portal.getPortalAccountingMovementTypeList(),
-                                    grouping_reference=None,)])
+                                    grouping_reference=None,) if not line.getObject().getGroupingReference()])
       if grouped_line_list:
         print 'FIXED', grouped_line_list
       else: