An error occurred while fetching the assigned milestone of the selected merge_request.
closes #213 (closed) closes https://gitlab.cern.ch/push-notifications/notifications-design/-/issues/46
Use case: If user has no device associated with preference - preference page banner
There is a global preference with no device but there is channel preference that has a device, but since we want global preferences to be correct, show a warning
Use case: If user has no preferences: site wide banner
Use case: If user disables all default preferences for a channel and as no custom channel preferences - channel preference page banner