schemas/vegbien.sql: analytical_stem_view: updated to use new taxon_scrub. this avoids the need to manually COALESCE every accepted* and matched* field, and makes the formulas much clearer

inputs/.TNRS/schema.sql: added taxon_scrub, which combines ValidMatchedTaxon with scrubbed_unique_taxon_name.* instead of AcceptedTaxon

inputs/.TNRS/schema.sql: ValidMatchedTaxon: synced to MatchedTaxon

fix: inputs/.TNRS/schema.sql: scrubbed_taxon_name_with_author: renamed to scrubbed_unique_taxon_name because this also contains the family, and is therefore different from just the taxon name with author

inputs/.TNRS/schema.sql: MatchedTaxon: added scrubbed_taxon_name_with_author

inputs/.TNRS/schema.sql: tnrs: removed Is_homonym, since this did not take into account the never_homonym status (when the author disambiguates) or the ability of a non-homonym at a lower rank to override a homonym at a higher rank. taking these into account just produces the value of is_valid_match.

inputs/.TNRS/schema.sql: tnrs: removed Is_plant, since this functionality is now provided by is_valid_match. note that whether a name is a plant is not meaningful for TNRS, because it can match only plant names (thus a "non-plant" is actually a non-match).

inputs/.TNRS/schema.sql: tnrs: added scrubbed_taxon_name_with_author derived column, which uses the matched name when an accepted name is not available

inputs/.TNRS/schema.sql: tnrs: removed no longer used Max_score. use is_valid_match to determine validity instead.

bugfix: lib/runscripts/file.pg.sql.run: export_(): exclude Source and related tables so that these will be re-created by the staging tables installation instead, ensuring that they are always in sync with the Source/ subdir