updates csv parser to skip blank lines …

… or lines with less than nine columns.
:arrow_right: prevents an IndexOutOfBounceException.

see https://github.com/dirkschumacher/iUPB/commit/721cba72d23ef71f74aee596367df4220f8c04ce for a comparable change to iUPB, where the invalid stwpb csv file blew up production last weekend…