Updated Jobs API
- SubmissionTime attribute is in string format now, using datetime.isoformat()
- GET /jobs return complete info of the jobs in a "jobs" list
- GET /jobs/<job_id> returns a "job" dict
- DELETE /jobs/<job_id> updates the entry in the database and deletes only when the jobs is running/waiting/pending.
- Updated job_test to include a info() function and cli option