fix: tup-675 submit form without email gives 500 (#399)

* fix: tup-675 tour request form 500 error on submit

* fix: tup-675 incorrect syntax to check for email prop

apps/tup-cms/src/apps/portal/apps.py

@@ -70,7 +70,7 @@ def callback(form, cleaned_data, **kwargs):
     logger.debug(f"received submission from {form.name}")
     if form.name == 'rt-ticket-form':
         submit_ticket(cleaned_data)
-    else:
+    elif hasattr(cleaned_data, "email"):
         send_confirmation_email(form.name, cleaned_data)