Add sent message overview to the push notifications API
Needed for ThaliApp#99
Short description
Adds a new route to the push notifications API, where one can view all push messages sent to them.
Steps to use this feature
- Head to
/api/v1/notifications/. - See list of messages sent through push notifications.
- View one notification at
/api/v1/notifications/[pk]/(even though it does not provide any more information).