Enable CRON job to send daily logs digest

* Create a CRON job that runs every 24 hours
* Grab all logs from 12 hours before the CRON job to 12 hours after the CRON job
* Format that digest of logs into email friendly format
* Email the digest to the address specified in the environment variables
* Restrict access to CRON url so that non-admin users cant activate it
* Ignore all `.cron.yaml.swp` files