Defined array outside ($users > 0) scope block - prevents 'undefined variable' spam at midnight every day.
Added passive-aggressive code comments.
Added 'rand' to file name generation, seconds-since-epoch isn't accurate enough if many nodes have been requesting updates at the same time.
Removed for-0-users logic, we still want a result, even if the values are 0.
Merge branch 'master' of github.com:sown/node_control
Fixed typo in node exceeds check