Update the generated package's auto-generated Sphinx docs

[kelseyq]

There's been a new version of Sphinx since the docs in this template were generated! Let's get conf.py and the Makefile more up to date.

TODOS:

• Generate a sample package from this template
• Remove conf.py and Makefile from the generated package's docs folder
• Run 'sphinx quickstart' in that docs folder
• Review the changes and decide which ones need to be incorporated into our template