Add "brief" version of QR codes

- Use this to render to labels (as it contains much less information)

InvenTree/label/models.py

@@ -142,7 +142,7 @@ class StockItemLabel(LabelTemplate):
                 'serial': item.serial,
                 'uid': item.uid,
                 'pk': item.pk,
-                'qr_data': item.format_short_barcode(),
+                'qr_data': item.format_barcode(brief=True),
                 'tests': item.testResultMap()
             })