probes cannot filter unfound probe locations

Currently the probes function object outputs a column even for probes which are outside any mesh. The values of these probes get set to -1e300.

Add functionality to suppress output for these probes.

mentioned in commit 8fbfff2f

mentioned in commit 8699c534

changed the description

changed milestone to %Version v1706

closed via commit 3b95f1e4

closed via merge request !121 (merged)

mentioned in commit 3b95f1e4