Allows for apostrophe in the email subject

The `$entities` may be expanded to include other encoded values other than `&apos;` as you wish.

    public function disableOutputEscaping($string)  
    {
        $entities = array('&apos;' => "'");
        
        foreach($entities as $escaped => $value)
        {
            if(preg_match("`$escaped`", $string))
            {
                $string = preg_replace("`$escaped`", $value, $string);
            }
        }
        
        return $string;
    }