Implement user log-ins

[kimrutherford]

Given the discussion on Zoom, we might need this after all.

The easiest option is to require users to set up an ORCID account and use their login system. Like we do for Canto admin accounts.

We discussed it years ago and decided we didn't need it:

• User logins & customizable gene page #26

Related:

• Save query history in user accounts #585
• Add person pages and lab pages with a curation summary #332

[kimrutherford]

We should be able to use this Python library to integrate with ORCID:
https://python-social-auth.readthedocs.io/en/latest/backends/orcid.html