public static function register_assets()
{
$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG === true ? '' : '.min';
// Add javascript
wp_register_script('underscore', 'https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.0/underscore-min.js', array(), '1.8.0');
wp_register_script('sis_js', SIS_URL . 'assets/js/dist/app' . $suffix . '.js', array('jquery', 'jquery-ui-button', 'jquery-ui-progressbar', 'underscore'), SIS_VERSION);
// Add javascript translations
wp_localize_script('sis_js', 'sis', self::localize_vars());
// Add CSS
wp_enqueue_style('sis_css', SIS_URL . 'assets/css/sis-style' . $suffix . '.css', array(), SIS_VERSION);
}