schemas/vegbien.sql: tnrs_input_name: Use TNRS.tnrs directly instead of the now-deprecated tnrs+accepted

schemas/vegbien.sql: Use new TNRS.tnrs_canon instead of tnrs+accepted to avoid creating additional taxonlabels for the parsed, matched, and accepted names and instead just use the most-canonicalized name of the names output by TNRS (the accepted name if available, or the matched name otherwise)

mappings/VegCore-VegBIEN.csv: "if has verbatim name" _if statements that filter something out for TNRS mappings: Also assume true if taxonIsCanonical is specified, because some TNRS tables (eventually such as public.unscrubbed_taxondetermination_view) do not specify a separate "verbatim" taxondetermination but do provide taxonIsCanonical as a flag to turn various mappings on and off

mappings/VegCore-VegBIEN.csv: Remapped matched*Fit_fraction to taxondetermination.taxonfit when a taxondetermination, not just a taxonlabel, is provided

bin/map: map_table(): Resolving prefixes: Fixed bug where need to use list instead of tuple for metadata value mappings

schemas/vegbien.sql: taxondetermination: Added CHECK constraint to allow only taxondeterminations with a minimum fit fraction of 80%, analogous to taxonlabel's taxonlabel_1_matched_label_min_fit() trigger

mappings/VegCore-VegBIEN.csv: Don't create a separate TNRS input taxonlabel if taxonIsCanonical exists

inputs/.TNRS/schema.sql: tnrs_canon: Fixed bug where need to always use Unmatched_terms from tnrs rather than tnrs_accepted

inputs/.TNRS/schema.sql: Added tnrs_canon, which stores the most canonicalized name output by TNRS

schemas/vegbien.sql: analytical_stem_view: accepted_taxonverbatim: Fixed bug where need to join only to the taxonverbatim whose morphospecies is NULL, to avoid joining to multiple taxonverbatims at once. This extra filter is now needed because there can be multiple taxonverbatims for a taxonlabel with different morphospecies.