updates error rows in validation

[Rachelfrenkel]

This version of csv-file-validator changes the row numbers in the validation errors to more accurately reflect where they are in the CSV file. For some errors it was saying Line 0, for other types of errors on the same line it was reporting Line 1. Some errors are also customized.

[shystruk]

@Rachelfrenkel please share a .csv file example where a row number is incorrect