Added document level description and cleaned template up.

Note: Still need to fill in doc variables to load the
Sphinx format.
Made significant improvements to the Sphinx-Latex export
template.

The inheritance was cleaned up.  Currently no content is
rendered (that's a task for later.)  The important thing
is that the template can be built through the Jinja 2
structure and converted to a PDF using pdflatex.
Unfortunately it seems that Sphinx requires texlive-full
which is a huge dependency.