Don't start on JobStatus chng & stop on R -> IDLE.

This is handling edgecases, where a startd died and after a timeout of 1hr the job is requeued.
The IDLE -> RUNNING state then already has all other attributes (like RemoteHost)  set, from the last execution.
We should wait for `CpusProvisioned`, though, so that all required values are already up-to-date.

Additionally, since timed-out jobs are not held, but instead just requeued, stop jobs as well when the state changes from `RUNNING` to `IDLE`.