authentic: export email_verified attribute

authentic/export-users.py

@@ -30,6 +30,7 @@ def to_json(user):
         'last_name': user.last_name,
         'is_superuser': user.is_superuser,
         'password': user.password,
+        'email_verified': user.email_verified,
         'roles': [role_to_json(role) for role in user.roles.all()],
         'attributes': {}
     }