fixed: CPButton's images were lost when becoming disabled
fixed: CPButton's images were lost when becoming disabled

cappuccino/cappuccino,cappuccino/cappuccino,daboe01/cappuccino,daboe01/cappuccino,daboe01/cappuccino,daboe01/cappuccino,daboe01/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,daboe01/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,daboe01/cappuccino