production daemon (keep thoughtswap running)

[brittanybraswell]

we currently run the server by using foreverjs, and maybe that's an ok start, but we don't have anything to restart on crash, and we really should (perhaps even notifying someone of the crash). There are many ways we could add restart after crash (or auto start if our VM gets rebooted [like by techstaff doing maintenance]). depending on the os version we're on we could use the ancient upstart, or the more-recently-more-preferred systemd. We could also hack something together only slightly quicker using nodemon, PM2, or similar.