Since nagios-plugins are separate, support them. First, though, just
do some basic ones directly in python, given how powerful
check_system_health was...
Also - don't need cherrypy directly yet - just have a report page, and
run out of cron (or some equivalent loop-runner.) So start with
"generate one report", add --html, then add continuous-runner...
Run as a non-privileged user, as well.