Added POIA "IsCanonical" property.

prs.classes/Entities/Job/Requisitions/JobRequisitionItemPurchaseOrderItem.cs → prs.classes/Entities/Job/Requisitions/PurchaseOrderItemAllocation.cs

@@ -27,5 +27,8 @@ namespace Comal.Classes
         public JobRequisitionItemLink JobRequisitionItem { get; set; }
         
         public double Quantity { get; set; }
+
+        [NullEditor]
+        public bool IsCanonical { get; set; }
     }
 }