/**
* Assert that the active user is a site administrator
*
* @return GalleryStatus success if the user is an administrator
* ERROR_PERMISSION_DENIED if not.
*/
function assertUserIsSiteAdministrator()
{
MyOOS_CoreApi::requireOnce('modules/core/classes/helpers/GalleryUserHelper_medium.class');
return GalleryUserHelper_medium::assertSiteAdministrator();
}