schemas/util.sql: view_def_to_orig(): use new expansion_min_cols() for easier configuration

schemas/util.sql: added expansion_min_cols() (the minimum # of cols from the same table to be treated as a * expression)

fix: schemas/public_.sql: analytical_stem_view: regenerated columns list for viewFullOccurrence_individual (instead of viewFullOccurrence_individual_view)

bugfix: mappings/VegCore-VegBIEN.csv: prefixed taxonomic ranks: use _concat_nullify() so that the prefix is only added if the epithet is non-NULL

fix: schemas/util.sql: col_re(): support column names with " in them

schemas/util.sql: added _concat_nullify(), which uses || instead of concat()

bugfix: inputs/FIA/REF_RESEARCH_STATION/map.csv: mapped country, which is not provided in the FIA data

schemas/public_.sql: removed no longer used threatened_taxonlabel_view. use iucn_red_list_view instead.

schemas/public_.sql: viewFullOccurrence_individual_view: documented materialize time (22 h)

inputs/.TNRS/schema.sql: taxon_match: removed no longer used scrubbed_unique_taxon_name. the scrubbed name ranks are now generated from the other TNRS columns instead.