Allow to renew a certification

Currently, we are not able to send a certification if this certification is already in the blockchain and used.

We should allow certifications to be replayed with next Duniter protocol (blocks v11 and Duniter 1.7.5).

• remove check which prevents to certify again an identity.
• allow to renew when possible

changed the description

assigned to @moul

added Doing label

mentioned in issue #151 (closed)

changed title from Allow to replay a certification to Allow to renew a certification

changed the description

mentioned in commit 46b31183

mentioned in commit 9f334f36

mentioned in merge request !91 (merged)

mentioned in commit bd28372e

mentioned in commit 941491ef

removed Doing label

closed

mentioned in commit 9a145055

mentioned in commit 698a1122

mentioned in commit 58dcbbb7

changed milestone to %0.6.1

removed Web of Trust label