'Template for the subject line in update notifications.
Available placeholders:
$S = System Name (long)
$s = System Name (short)
$r = Resource Name
Use {} to separate the placeholder from immediately following
identifier characters (like: ${placeholder}text).'

def get_msg_notify_subject(self):

    return self.msg.get('notify_subject', ('$s    %s:    $r' % current.T('Update    Notification')))
