Re #8578 - Updated certificate and certificate_repository- certificate initialize revocation_date and revocation_reason on "" if input is None- certificate_repository - repaired error after tests - edited comments (return) - stylistics
Re #8578 - Implemented new functions- set_certificate_revoked, clear_certificate_revocation, get_all_revoked_by, get_all_issued_by- update returns of all functions
Re #8476 - Certificate usages bugfix (?)
Re #8471 - Merge implement DAO - source code