Misc. improvements for desktop receiving views

- don't expose "cases" if config says not to
- don't expose "expired" if config says not to
- use `numeric-input` for quantity fields
- add `product_key_field` to global-ish template context

tailbone/views/master.py

@@ -2208,6 +2208,9 @@ class MasterView(View):
             'quickie': None,
         }
 
+        key = self.rattail_config.product_key()
+        context['product_key_field'] = self.product_key_fields.get(key, key)
+
         if self.expose_quickie_search:
             context['quickie'] = self.get_quickie_context()