processEditOccurrences reuses taxon_nos for existing occurrences whenever possible, instead of starting from scratch each time; also, two unrelated fixes to name parsing routine
processEditOccurrences reuses taxon_nos for existing occurrences whenever possible, instead of starting from scratch each time; also, two unrelated fixes to name parsing routine

paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new