updates to syncing s3 logs and cron jobs

* Create an upstart job that is run after supervisor stops to sync logs
* Syncs trakcing logs before application logs
* stderr and stdout go to /dev/null so we don't fill up root's mailbox
checking in template
Merge pull request #1439 from edx/jarv/fix-log-sync

updates to syncing s3 logs and cron jobs