Ducreux: Disregard keybase.io account passwords. Utilize GPGAuth for login

Not sure how feasible (nor how desirable) this would be, but just tossing it out there: https://gpgauth.org/projects/gpgauth/

The workflow would be:
1. User claims keybase username
2. Keypair is generated for user (user is prompted for password as part of key generation)
3. Server associates public key with keybase username
4. User now only has to remember one password (private key password) and still has secure login capabilities

Start by reviewing the linked GPGAuth project and the proposed four-step workflow. Determine whether the requested login change is feasible and desirable, then define the scope and acceptance criteria before implementation.

Written by the indexing model from the issue text.