需要用JS库对WebDAV进行CRUD操作，找了一堆备选JS库。
- IT Hit WebDAV Ajax Library：http://www.webdavsystem.com/ajax/programming
- https://github.com/sandro-pasquali/jquery.dav
- https://github.com/evert/davclient.js
- https://github.com/matthewp/webdav
- https://github.com/aslakhellesoy/webdavjs
- https://github.com/dom111/webdav-js
- https://github.com/sara-nl/js-webdav-client