Orchestrate Research Excellence Framework submissions using EPrints.

Originally developed by Sébastien François (https://github.com/sebastfr), Tim Brody and Tim Miles-Board (https://github.com/drtjmb); version 1.3 ported here from http://bazaar.eprints.org/270/

Do it again for 2021

If this code is already hosted elsewhere, please contact @cziaarm.

With thanks to Goldsmiths, University of London who funded the development of REF2021 by the UoL repsotiroies team.