Notifcation not present when deleting a collection type

[brianmcbride]

Descriptive summary

When an administrator deletes a collection type there is no notification that the deletion was successful.

Rationale

It's common in the Hyrax system to provide administrations with a notification message on the successful completion of a task.

Expected behavior

Notification is pushed to user that notifies them the collection type was successfully deleted.

Actual behavior

No notification is given to user when collection type is deleted.

Steps to reproduce the behavior

1. Go here - https://nurax.curationexperts.com/admin/collection_types?locale=en
2. Creation new collection type
3. Save new collection type
4. Go to Collection Types Page under settings
5. Click the delete button to the left of the newly created collection type