schemas/vegbien.sql: sync_analytical_stem_to_view(): row_num: renamed to taxon_occurrence__pkey because previous taxon determinations have been removed, so each row is in fact a taxon_occurrence (~= VegCore.vegpath.org?ERD.taxon_occurrence)

fix: schemas/vegbien.sql: analytical_stem_view: don't ORDER BY datasource, because this requires a slow full-table sort after the hash joins. (when selecting a subset of analytical_stem_view, nested loops are used automatically without needing an ORDER BY to force this.) to get the datasource-sorted order (plus a sort-order guarantee), you can still add a manual `ORDER BY datasource`, which will use a fast index scan on one of the datasource indexes.

schemas/vegbien.sql: analytical_stem: added row_num, which can serve as the taxon_observation ID (DwC occurrenceID)

Updated load-geoscrub script with configurable db.

load-geoscrub-input.sh now uses a variable with the db name defined at
the top of the script.
Updated the default db host to 'localhost' for this script.

schemas/vegbien.sql: analytical_stem: locationID... index: use eventDate instead of dateCollected since it's now eventDate that identifies the locationevent

schemas/vegbien.sql: analytical_stem: locationID... index: use eventDate instead of dateCollected since it's now eventDate that identifies the locationevent

schemas/vegbien.sql: analytical_stem_view: use plot.** to obtain plot-related fields, so that the same code does not need to be maintained in both analytical_stem_view and plot.**

schemas/vegbien.sql: analytical_stem_view: moved specimen-specific fields to occurrence section

schemas/vegbien.sql: analytical_stem_view, plot.**: added separate location__cultivated__bien

schemas/vegbien.sql: added separate eventDate, in addition to dateCollected