Add extensive updates to setup_ipython_notebook.sh

[davclark]

I have, for example, a script to enable Scala.

[davclark]

https://github.com/dlab-projects/benten-config/blob/master/setup_ipython_notebook.sh

[davclark]

At this point, this is a frequent enough activity that I think it makes sense to have the "standard" living in a gist or other stand-alone repo. Git submodules would make sense if git weren't already so hard to use (I don't use them with collaborators).

Anyway, gist here. I think it's reasonable to just copy over for now. BUT, it would be nice to update this one to work with modern Jupyter machinery. I just haven't had a chance yet.