2.4 timeagoinwords

see https://cakephp.lighthouseapp.com/projects/42648-cakephp/tickets/544-enhancement-to-timehelper

It also allows one to use the method in some special cases where you cannot use "%s ago" (as the translation would mean sth else in this context) and you simply need the timeAgo without any pre or suffix:

    $res = CakeTime::timeAgoInWords($dateTime, array('relativeString' => '%s');