Thread:Project:Support desk/Hide tabs for not logged users in Vector

MediaWiki Version: 1.23.4 PHP 5.4.34-0

I want to hide (page) tabs for not logged users (they don't have the edit rights to edit pages in my wiki). Following tabs should be hide: ' ' tab, 'Talk' tab, 'Read' tab, 'View' source tab and 'View' history tab. Where should I add the PHP rules in order to hide these tabs? Thanks in advance!