Add product UPC to JSON output of 'products.search' view.

tailbone/views/products.py

@@ -356,6 +356,7 @@ def products_search(request):
             else:
                 product = {
                     'uuid':                     product.uuid,
+                    'upc':                      unicode(product.upc or ''),
                     'full_description':         product.full_description,
                     }
     return {'product': product}