1.修改NPD OrderDetail，当OrderCode为空时不能Copy Order。

RedAnt ERP Mobile/common/Functions/order/OrderDetailViewController.m

@@ -1289,6 +1289,12 @@
                 [self.detailTable reloadData];
                 self.isrefreshing=false;
                 
+                if (self.order_code == nil) {
+                    self.btnCopy.enabled = false;
+                } else {
+                    self.btnCopy.enabled = true;
+                }
+                
             });
             
         });