Revert "Added documentation and added feature to ensure that the right columns are chosen from Mutalyzer Output file for errors and chromosomal variants. I actually check the column labels now rather than just using a constant."

This reverts commit bd975ac75b21bd79acab72bcd2b5a20dcde44ed3.
Revert "Revert "Added documentation and added feature to ensure that the right columns are chosen from Mutalyzer Output file for errors and chromosomal variants. I actually check the column labels now rather than just using a constant.""

This reverts commit e0809152f14d4a775fd50b78986a7cfea1fcbf87.