WIP slapos_accounting: do not stop invoice until the stop date is passed

master/bt5/slapos_accounting/SkinTemplateItem/portal_skins/slapos_accounting/Delivery_stopConfirmedAggregatedSaleInvoiceTransaction.py

 portal = context.getPortalObject()
+from DateTime import DateTime
+
 if context.getPortalType() != 'Sale Invoice Transaction':
   raise TypeError('Incorrect delivery.')
+
+now = DateTime()
 isTransitionPossible = portal.portal_workflow.isTransitionPossible
-if context.getSimulationState() == 'confirmed'\
-  and context.getLedger() == 'automated'\
-  and len(context.checkConsistency()) == 0\
-  and context.getCausalityState() == 'solved'\
-  and len(context.objectValues(portal_type="Sale Invoice Transaction Line")):
+if (context.getSimulationState() == 'confirmed')\
+  and (context.getLedger() == 'automated')\
+  and (len(context.checkConsistency()) == 0)\
+  and (context.getCausalityState() == 'solved')\
+  and (0 < len(context.objectValues(portal_type="Sale Invoice Transaction Line"))\
+  and (context.getStopDate(now) < now)):
 
   comment = 'Stopped by alarm as all actions in confirmed state are ready.'
   if isTransitionPossible(context, 'start'):