print job status at end of submit test
don't return empty status values
let lsf status fields be nullable
use isoformat to display timestamp
don't cache status on Job
add poll_after to Job
add pollingInterval to job post schema
add beat to Procfile(s)
add default polling interval to backend
put beat schedule file in var/* for testing
test submit callback
use test queue for webhook testing
increase webhook test listener timeout to 60
cleanup webhook triggering
trigger status updates with polling
ignore /.eggs
test failure webhook
add tests with both success + failure webhooks
Merge pull request #21 from mark-burnett/job-polling

Add job polling and webhooks