allow identity revocation with v1 certificate

We should make this possible

changed milestone to %Ğ1 real migration

added D-easy P7-nicetohave labels

removed milestone %Ğ1 real migration

added Maybe-Mandatory-Prod label

removed P7-nicetohave label

added C-runtime label

added S-ToDo label

assigned to @tuxmain

added S-doing label and removed S-ToDo label

What we can check on a V1 document:

• Constants (version, currency name)
• username
• issuer key is current or old owner of the identity
• block number below a constant
• revocation signature is valid

What we can't check, because it requires V1 index:

• blockstamp exists
• identity signature is valid

Since parsing can be done easily and safely, I choose to send the full document. It also reduces the work needed by the wallets.

mentioned in merge request !295 (merged)

closed with merge request !295 (merged)