mappings/VegCore.csv: Renamed verbatim* taxonomic terms to original* because in most datasources, they are in fact for the original taxon determination of the organism (which can be a completely different name than the primary determination), rather than merely unscrubbed versions of the primary taxonomic name elements. Note that SALVIAS's orig_* terms do appear to be merely unscrubbed versions, but it's not a problem to add an additional taxon determination for them.