get = function ( name ) {
			return $(name, from)
				.map( function () {
					return $(this).width();
				} ).toArray();
		}
Copy widths from the cells in one element to another. This is required
for the footer as the footer in the main table takes its sizes from the
header columns. That isn't present in the footer so to have it still
align correctly, the sizes need to be copied over. It is also required
for the header when auto width is not enabled

@param  {jQuery} from Copy widths from
@param  {jQuery} to   Copy widths to
@private