Add drive-contents.js
Add drive-contents.js

This file is based on earlier work, see https://github.com/takluyver/ipython/blob/948d5e7a645f777743c87c45327bf73b38a20c82/IPython/html/static/base/js/drive_contentmanager.js

Carreau/jupyter-drive,jupyter/jupyter-drive,Carreau/jupyter-drive,jupyter/jupyter-drive,jupyter/jupyter-drive