Return the string to display in the curse interface.

def msg_curse(self, args=None, max_width=None):
        """Return the string to display in the curse interface."""
        # Init the return message
        ret = []

        # Build the string message
        # 23 is the padding for the process list
        msg = '{:23}'.format(self.stats)
        ret.append(self.curse_add_line(msg))

        return ret