Revoke your account/keys

[jaytaph]

Proposal: we do a soft-delete (deleted_at column to the db). Later we can see if we want to hard-delete old records (say > 6months)

We also need some kind of tool: bm-client account revoke or something?

[jaytaph]

proposal:

• we add a soft-delete
• we have a grace period (of X days)
• afterwards we delete the account from the key resolver