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.

mappings/VegCore-VegBIEN.csv: taxonlabel.taxonomicname: Prepend the family to the rest of the name using new _merge_prefix() instead of _join_words()/_nullIf(), so that any input taxonomic name that includes the family will not have the family duplicated in the combined taxonomic name. Previously, the duplication was removed only when the rest of the input name was equal to the family. This change fixes a bug in the new TNRS import where a pre-concatenated taxonomic name (Accepted_scientific_name) which includes the family is now used instead of Accepted_name, which only includes it when it's equal to the family.

xml_func.py: Simplifying functions: Merging: Added _merge_prefix() passthru

schemas/functions.sql: Added _merge_prefix()

inputs/.TNRS/schema.sql: tnrs_populate_accepted_scientific_name(): Fixed bug where Accepted_name_family shouldn't be prefixed to Accepted_name if Accepted_name is itself the family, to avoid duplicating the family in the Accepted_scientific_name

inputs/.TNRS/schema.sql: tnrs+accepted: Added new Accepted_scientific_name column and mapped it in public.unscrubbed_taxondetermination_view

schemas/vegbien.sql: tnrs_input_name: Fixed bug where need to filter out tnrs+accepted rows with NULL Accepted_scientific_name, because inputs to tnrs_db must be strings