Changes to Get a contact list

the response property errors became required for the status 401

the response property errors became required for the status 403

the response property errors became required for the status 404

the response property errors became required for the status 500

the response property errors/items/status_code became required for the status 401

the response property errors/items/status_code became required for the status 403

the response property errors/items/status_code became required for the status 404

the response property errors/items/status_code became required for the status 500

the response property id became required for the status 200

the response property name became required for the status 200

added the required property description to the response with the 200 status