Function conMakeStart

Set a start-article @fixme Do we still need the isstart. The old start compatibility has already been removed...

Package: Core\Backend
Copyright: four for business AG <www.4fb.de>
License: http://www.contenido.org/license/LIZENZ.txt
Author: Olaf Niemann, Jan Lengowski
Author: Murat Purc <murat@purc.de>
Located at includes/functions.con.php

Parameters summary
`integer`	`$idcatart`	Idcatart of the article
`boolean`	`$isstart`	Start article flag