Swap order of options on delivery print menu

Feedback from users suggests the new "print delivery checklist" option
should appear at the end of the menu instead of the start.

quicktill/delivery.py

@@ -276,14 +276,14 @@ def printout(self):
             return
         num_labels = self._label_query().count()
         menu = []
+        if num_labels > 0:
+            menu.extend((f"Print labels on {x}", self._print_labels, (x,))
+                        for x in tillconfig.label_printers)
         if tillconfig.receipt_printer:
             menu.append(("Print a delivery checklist",
                          printer.print_delivery_checklist,
                          (tillconfig.receipt_printer, self.dn)))
 
-        if num_labels > 0:
-            menu.extend((f"Print labels on {x}", self._print_labels, (x,))
-                        for x in tillconfig.label_printers)
         ui.automenu(menu, title="Delivery print options",
                     blurb=[f"There are {num_labels} stock labels to print."],
                     colour=ui.colour_confirm)