Revert "Background the purging of old data"

This reverts commit b577a35d0d7afd95b06b20c760f5ab0636b64a9b.
Revert "Move Proby check to where the actual work is being done"

This reverts commit 1629f3340cd5bafff7544495b8b4fe12cf891ffb.
Revert "Have the CronController create background jobs to alert users of solar events and alert users of aurora if conditions optimal"

This reverts commit 56c372055231d7cb3083433787124ca75d9a45e5.
Revert "Add delayed_job to the project"

This reverts commit 6f2154b78679c46956ce2b1c7d88467bf36d5f99.