bibtex-based bibliography in the docs

[rahulsavani]

This feature request is for...

Other

Requested enahancement or feature

This request is for the documentation.

Currently bibliographic entries are just referenced text in doc/biblio.rst. This will not scale well as we grow the catalog.

We should use bibtex, and, in particular:

https://github.com/mcmtroffaes/sphinxcontrib-bibtex

[edwardchalstrey1]

Implemented this on fix/900 - will make a PR after #889 since it's branched from there