I wanted to add a link to this in the Quick Bar - Navigation. Adding array( 'text'=>'newimages', 'href'=>'newimages-url' to LocalSettings.php threw up an error page. I had to add 'newimages-url' => 'Special:Newimages', after 'newimages' => 'New images gallery', in Language.php.
Seems to work for me but don't really know if there are other implications of these changes.
Ken Ross