Make it clearer what the comprehension is doing
Make it clearer what the comprehension is doing

The dict comprehension here is doing a bit of trickery.

By naming it `default_values` it makes it a bit clearer what its purpose
is.

Also means we can put in in the superclass.

alphagov/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin,alphagov/notifications-admin