API Add publish / unpublish actions to asset admin
API Add publish / unpublish actions to asset admin

open-sausages/silverstripe-asset-admin,silverstripe/silverstripe-asset-admin,open-sausages/silverstripe-assets-gallery,silverstripe/silverstripe-asset-admin,open-sausages/silverstripe-asset-admin,open-sausages/silverstripe-assets-gallery