Gets the status of a submitted query given its ID.
URL: /job/status/:id{[0-9]+}
METHOD: GET
Condition: Job is found.
Code: 200 OK
Content:
{"job-status": [STRING ["completed" | "failed" | "pending"]]
"failure": [STRING Failure message] // OPTIONAL}
Condition: Job is not found.
Code: 404 Not Found