Auto set date columns to Y-m-d format

This relies on a feature in MVC 2.6 that allows strict models to set the format for Hazaar\Date type fields.

When using Table::row() or Table::findOneRow() to find a DBI row and return it as a Hazaar\DBI\Row object to allow advanced features. We can get native date columns to automatically format to Y-m-d during output.