src_map: Upgraded to match new map format by adding Filter column

input.Makefile: $(viaMaps): Fixed bug where could not wrap it in $(wildcard) because that would prevent map.csv from being created when a new datasource or new subdir is added

input.Makefile: $(viaMaps): Removed extra addition of */map.csv, which is already included because all $(tables) have or will get a map.csv

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+