mappings/: Removed no longer used derived file Veg+.vocab.csv

input.Makefile: Removed no longer used $(vocab)

input.Makefile: Maps validation: %/new_terms.csv: Filter out $(coreMap) and $(dict) successively instead of $(vocab), to avoid requiring intermediate mapping files not edited by the user

input.Makefile: Maps validation: $(newTerms): Don't hardcode the caller's first filter_out_ci by prerequisite position; instead allow them to specify the command (including the var name) themselves

input.Makefile: Maps validation: $(newTerms): For simplicity, subset the columns before running filter_out_ci

mappings/: Removed no longer used Veg+-VegBIEN.csv and derived autogen Veg+.self.csv

input.Makefile: Maps building: %/unmapped_terms.csv: Use $(coreMap) instead of $(vocab) because the terms should already be translated to VegCore terms, rather than still being Veg+

input.Makefile: Maps validation: $(newTerms): Fixed bug where header needed to be removed before running filter_out_ci because filter_out_ci only removes the header if it matches the vocabulary's header. Removing the header afterward can cause the first row to be removed instead if the header was already removed.

cols: Support CSVs without a header, such as intermediates that become unmapped_terms.csv, new_terms.csv

inputs/: Regenerated unmapped_terms.csv, new_terms.csv