schemas/vegbien.sql: make_family_higher_plant_group(): Added `taxonepithet IS NOT NULL` filter, to allow make_analytical_db to proceed even when the NCBI import fails (leaving some nodes with rank = 'family' but no associated taxonepithet). The most recent NCBI import failed due to the search_path/DuplicateException bug resulting from the import schema and public being in the search_path together.
schemas/vegbien.sql: make_family_higher_plant_group(): Added `taxonepithet IS NOT NULL` filter, to allow make_analytical_db to proceed even when the NCBI import fails (leaving some nodes with rank = 'family' but no associated taxonepithet). The most recent NCBI import failed due to the search_path/DuplicateException bug resulting from the import schema and public being in the search_path together.