Re #8471 - Modified scripts and database- relation between Certificates and CertificateUsages tables on delete 'no action' >> 'cascade'
Re #8471 - Added FK of parent certificate
Re #8471 - Repaired datamodel (SQLite)- inserted new table for NxN relation (Certificates - UsageTypes)- edited .sql scripts
Re #8305 - Edited ERA model and script for generate database- password column migrated from Certificate table to PrivateKey table
Re #8305 - Created ERA model and DB script- ERA model- script for generate DB- script for insert default values into DB