Add pre/post hook for CRM_Mailing_BAO_MailingJob
This ticket is about adding pre, post hook to MailingJob and it involve:
- Call the pre/post hook inside
CRM_Mailing_BAO_MailingJob::create()
- Add
CRM_Mailing_BAO_MailingJob::deleteMailingJob
to delete Mailing Jobs and add pre/post delete hook - Replace all the DAO call with corresponding create and delete fn in the codebase.