$(document).ready(function(){
    mw.loader.using('mediawiki.util', function(){
        mw.util.addPortletLink('p-navigation', mw.config.get('wgArticlePath').replace('$1','Special:OldReviewedPages'), 'Needing review', 'n-needreview');
    });
    var stableId=mw.config.get('wgStableRevisionId');
    var curId=mw.config.get('wgCurRevisionId');
    if(curId && stableId && stableId != curId)
        $(document.body).addClass('needsReview');
});