DeliveryAdminWindow: Add DeliveryJournal

Elwig/Documents/Document.cshtml.cs

@@ -53,6 +53,8 @@ namespace Elwig.Documents {
                 name = "DeliveryNote";
             } else if (this is CreditNote) {
                 name = "CreditNote";
+            } else if (this is DeliveryJournal) {
+                name = "DeliveryJournal";
             } else {
                 throw new InvalidOperationException("Invalid document object");
             }