Fixes #495 (false positive in health check).
Make settings page about old scheduled jobs, if any.
Merge pull request #944 from SalesforceFoundation/feature/935-no-suppress-db-errors

Feature/935 no suppress db errors
Merge dev into feature/945-health-check-sched-interface
Merge pull request #947 from SalesforceFoundation/feature/945-health-check-sched-interface

Feature/945 health check sched interface
Merge dev into feature/935-no-suppress-db-errors