Revise database

Deliverables:

• join ioc and ioc_version tables, the new table should be called ioc_version
• keep owner in ioc table
• remove ioc_owner from deployment table
• store git url string in deployment table
• merge awx_command and awx_job tables, new name should be awx_job
• eliminate is_active field in the deployment table
• use two way "binding" in tables to achieve this