版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/nestedSortable/2.0.0/jquery.mjs.nestedSortable.js
- https://cdn.bootcdn.net/ajax/libs/nestedSortable/2.0.0/jquery.mjs.nestedSortable.min.js
- https://cdn.bootcdn.net/ajax/libs/nestedSortable/2.0.0/jquery.mjs.nestedSortable.min.js.map