fix: inputs/NY/validations.sql, schemas/vegbien.sql: _specimens_13_count_of_all_verbatim_and_decimal_lat_long: count lat/longs together instead of separately, because the DISTINCT is by coordinate pair, not individual coordinate value (which wouldn't make much sense)

fix: inputs/NY/validations.sql: _specimens_13_count_of_all_verbatim_and_decimal_lat_long: use new is_castable(), which is much more accurate than Brad's custom regexp for determining if something is numeric

inputs/NY/validations.-.util.sql: added util.is_castable() wrapper

bugfix: inputs/NY/validations.sql: _specimens_13_count_of_all_verbatim_and_decimal_lat_long: need to include both lat and long in the value to DISTINCT on

fix: inputs/NY/validations.sql: _specimens_13_count_of_all_verbatim_and_decimal_lat_long: need to DISTINCT the values that are being counted, because they are merged by the coordinates_unique unique constraint in the import

inputs/NY/run: `make inputs/NY/validate`: documented slow queries: _specimens_12_distinct_collector_name_collect_num_date_w_count

inputs/SALVIAS/run_: `make inputs/SALVIAS/validate`: documented slow queries (_plots_06a_list_of_stems). these may need to have their query plans rechecked.

inputs/NY/run, inputs/SALVIAS/run_: `make inputs/.../validate`: updated runtime (+2 min)

fix: inputs/NY/validations.sql: specimens*_of_unique_verbatim_author_taxa_with_genus: use scientificName rather than the concatenated ranks, because that is what is imported to taxonlabel.taxonomicname

mappings/VegCore-VegBIEN.csv: mapped subspecies to new taxonverbatim.subspecies for easier access by validations queries