Custom nbgrader exchange to be used with ngshare. This should be installed in the singleuser image of Z2JH to allow the users to use ngshare.
To install this and ngshare, see the instructions on Read the Docs.
To manage students in your course, please don't use formgrader's web interface since it doesn't use ngshare. Instead, use the ngshare-course-management command that gets installed with this package. Please read the documentation for instructions on how to use this tool.