## About the changes
This allows us to encrypt emails at signup for demo users to further
secure our demo instance. Currently, emails are anonymized before
displaying events performed by demo users. But this means that emails
are stored at rest in our DB. By encrypting the emails at login, we're
adding another layer of protection.
This can be enabled with a flag and requires the encryption key and the
initialization vector (IV for short) to be present as environment
variables.
### What
In the demo when listing possible users to grant access to your project,
we inadvertently expose emails when listing users you can grant access
to. This PR anonymises the access list on the way out.
