4740: Add auto-selection of local timezone to factoryStatus.html

This auto-selects the local time zone on the factoryStatus monitoring
page. It has a side-effect that generating a link to the page will ignore
the time zone when displaying, but I think we should tackle that when we
clean and unify the monitoring pages down the road.
Merge remote-tracking branch 'origin/v3/4740' into branch_v3_2