Changes to Get paged direct invitations by group and descendants. Roles: admin, group/ancestor member.

added the new VIEW_COURSES enum value to the items/items/groupRole/permissions/items response property for the response status 200

added the new VIEW_PROGRAMS enum value to the items/items/groupRole/permissions/items response property for the response status 200

removed the VIEW_EDUCATION enum value from the items/items/groupRole/permissions/items response property for the response status 200

added the optional property items/items/group/groupType/externalReferenceId to the response with the 200 status

added the optional property items/items/groupRole/externalReferenceId to the response with the 200 status

added the optional property error/errorId to the response with the 400 status

added the optional property error/errorId to the response with the 401 status

added the optional property error/errorId to the response with the 403 status

added the optional property error/errorId to the response with the 404 status

added the optional property error/errorId to the response with the 500 status