Only throw a propagation validation error for events with a recurrence rule.
Only throw a propagation validation error for events with a recurrence rule.

ic-labs/icekit-events,ic-labs/django-icekit,ic-labs/django-icekit,ic-labs/django-icekit,ic-labs/icekit-events,ic-labs/django-icekit,ic-labs/icekit-events