Add column names to column summary

[MariusMerkleQC]

Would it be possible to provide not only the number of columns that are found in the original and not in the new but also the names of these columns?

For example, in this report, it would be good to know that the column that is in original but not in new is named "date_fld".

[fdosani]

@MariusMerkleQC thanks for the feedback. I'll take a look into this shortly. Just busy with a few other things at the moment.