Azure Notebooks issues

[rjleveque]

I'm trying to get everything working on the Azure notebook server.

You should be able to try it out from this link:
https://notebooks.azure.com/anon-gmbcuq/libraries/riemann_book
https://notebooks.azure.com/rjleveque/libraries/riemann-book

Some issues:

Linking to figures using this markdown:

![Velocity as a function of density in the LWR traffic model.](./figures/LWR-Velocity.png)

as done in Traffic_flow.ipynb, for example, doesn't seem to work. But this does:

from IPython.display import Image
Image('./figures/LWR-Velocity.png')

Links to citations give a "page not found" error even though riemann.html exists.

Probably other issues I haven't run into yet...

[ketch]

Unfortunately, I believe that the second way of including an image doesn't work in the PDF.