Import - proposal - remove dataColumn guessing

When you do a csv import in CiviCRM it attempts to guess the columns you are trying to import to

• if you provide column headings then it uses these. This works fairly well if your csv is based on an export from CiviCRM so I feel it is helpful
• if you don't it attempts to from the data provided. In most cases it can't. In a few narrow English specific cases (eg. 'mr' is a prefix) it does. I've found it often matches 'any string' to 'City' - which is probably the first any-string match it hits.

Three of us have separately come to the conclusion the data match attempt does more harm than good - opinions are more mixed on the heading match.

PROPOSAL - entirely remove the data matching efforts