Account APIs v2

[nicola]

LDNODE

• /api/accounts/delete: account is deleted from LDP and (?)

OIDC

• /api/accounts/signout: removes standing tokens (?)
• /api/accounts/validateToken: redirect to create a new password?
• /api/accounts/delete: deleting on OIDC (?)
  I ticked the ones I have implemented.

[RubenVerborgh]

We indeed need an account manager at some point.