Function CheckIfMetaTagExists

Checks if the metatag allready exists inside the metatag list.

Package: Core\Chain
Copyright: four for business AG <www.4fb.de>
License: http://www.contenido.org/license/LIZENZ.txt
Author: Andreas Lindner
Author: Unknown
Located at includes/chains/include.chain.content.createmetatags.php

Parameters summary
`array\|mixed`	`$arrMetatags`	List of metatags or not a list
`string`	`$sCheckForMetaTag`	The metatag to check

Return value summary
`integer`	Position of metatag inside the metatag list or the next available position