Query history -support to nflow-explorer-ng

[eputtone]

Legacy nflow-explorer got queryArchive configuration parameter while nflow-explorer-ng was being developed: https://github.com/NitorCreations/nflow/blob/master/nflow-explorer/src/config.js#L43

The capability should be integrated into nflow-explorer-ng as well. Perhaps a checkbox in workflow instance search form would be a more flexible solution, so users could control when potentially time consuming archive search is performed.