// Allow the Gravity form to stay on the page when confirmation displays.
add_filter( 'gform_pre_submission_filter', 'dw_show_confirmation_and_form' );
function dw_show_confirmation_and_form( $form ) {
	$shortcode = '[gravityform id="' . $form['id'] . '" title="true" description="false"]';

	if ( array_key_exists( 'confirmations', $form ) ) {
		foreach ( $form['confirmations'] as $key => $confirmation ) {
			$form['confirmations'][ $key ]['message'] = $shortcode . '<div class="confirmation-message">' . $form['confirmations'][ $key ]['message'] . '</div>';
		}
	}

	return $form;
}