* optimizes recalculate_parcels.py command so that only non-empty geometries will be processed
* drops test_identifier_generating.py command due to missing usage
* extends filtering for recalculatable geometries to records without started calculation at any point (parcel_update_start is null)
* catches exceptions on geometries which could not be recalculated properly, adds them to output for further analysis
* simplifies complexity factor calculation
mpeltriaux