Stalled/terminated runs cleanup

[zloster]

If there is some problem with a run in Citrine and a new run is started tfb-status still displays information about estimated remaining time for the old run.
Some details here: TechEmpower/FrameworkBenchmarks#4634 (comment)

[michaelhixson]

Notes to self about how to fix this:

Currently, our ResultsJsonView objects have elapsedDuration and estimatedRemainingDuration properties that are calculated relative to the current wall clock time.

tfb-status/src/main/java/tfb/status/service/HomeResultsReader.java

Line 346 in 4763e10

? LocalDateTime.now(clock)

It's not appropriate for those properties to be in ResultsJsonView since ResultsJsonView is cached (and the cached object is only forgotten when a new results.json file is uploaded). Those current-time-relative properties should be moved up to ResultsView, which is recreated on every incoming request.

Once those properties are on ResultsView, we can change the way estimatedRemainingDuration is presented such that if it's been 24h (or some other arbitrary amount of time) since the last update, we display "Run did not complete" or something.