$(document).ready(function(){
if (mw.config.get( 'wgRelevantUserName' ) !== null){
$("#t-log a").text("Logged actions"); // change text of log
$("#t-log").after('<li><a href="/wiki/Special:Log?page=User:' + encodeURIComponent(mw.config.get( 'wgRelevantUserName' )) + '">Target logs</a></li>');
}
});