bugfix: inputs/VegBank/taxon_observation.**/header.csv: updated for observation_/map.csv bugfix, which added new hasobservationsynonym field. this fixes a strange test bug caused by the taxon_observation.**/map.csv column list being mismatched/misaligned with what was in the underlying tables. (column mismatches will often cause unexplainable errors in unrelated sections of code the same way that buffer overflows do in C++.)