add websocket support and some test code
upgrade junit version to 4.8.
add the auto reload commited order feature support for todo list.

1. 坑爹的自动加载,ajax插入,恶心的模板代码;
2. 添加测试代码;测试提交,待处理列表自动加载;
3. table-list代码重构;
add the support of update the stock as soon as the order commit.

1. 增加订单提交更新库存逻辑;
2. bug修改(已处理列表);