slapos_accounting: ensore project has a currency before generating an open order

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

@@ -164,6 +164,11 @@ if instance_tree.getCausalityState() == 'diverged':
         return
         #raise NotImplementedError('No Software Product defined for %s' % instance_tree.getRelativeUrl())
 
+      currency = instance_tree.getFollowUpValue().Project_getAccountingCurrency()
+      if currency is None:
+        storeWorkflowComment(instance_tree, "No currency found")
+        return
+
       #assert instance_tree.getPortalType() in service.getRequiredAggregatedPortalTypeList()
 
       # Sale Supply price do not match Open Order