Explicitly define device-type scripts as radiodan-type-*
Continue trying to restart processes if they crash

Monit checks if processes are up every 10s so it's unlikely
to caush the CPU thrashing that you get with something like
upstart that restarts the processes immedietely
App software updater

Change layout of /opt/radiodan/:
 - Apps with managed updates now in ./apps/
 - App versions in ./apps/<name>/releases
 - Current version symlinked to ./apps/<name>/current
 - Updater workspace in ./updates

Install updater and bootstrap apps:
 - Install updater binary from deploy server
 - Check, download and install application updates during provision
 - Use monit to periodically check for and download updates
 - Install updates on system boot
Commit should be empty
Merge pull request #4 from radiodan/updater

Add application Updater to provisioned systems