Introduces an additional parameter $onlyDate to niceShort. Set it to true to hide the time-information. I bet it could be done much better (i.e. without the additional parameter).. Let me know, if you know how ;)

CustomTimeHelper.php

<?php
App::uses('TimeHelper', 'View/Helper');

/**
 * CustomTimeHelper.
 *
 * Introduces an additional parameter $onlyDate to niceShort.
 * Set it to true to hide the time-information.
 *
 * To use it, just save this file in /app/View/Helper/CustomTimeHelper.php
 * and add the following code to your AppController:
 *   	public $helpers = array(
 *		    'Time' => array(
 *		        'className' => 'CustomTime'
 *	  	  	)
 *		);
 *
 * @link https://gist.github.com/Suven/
 */
class CustomTimeHelper extends TimeHelper {

	public function niceShort($dateString = null, $timezone = null, $onlyDate = false) {
		if ($onlyDate) {
			$nice = parent::niceShort($dateString, $timezone);
			return substr($nice,0,strpos($nice,","));
		} else {
			return parent::niceShort($dateString, $timezone);
		}
	}
	
}