count boxes, handle skipped row headers, use result text attr
    
    Three misc fixes: count the number of 'boxes' for a given result
    row (that is, how many result cells there are on that row),
    use the results_wikitext property to find the result text to
    parse tables in, and handle tables where the row separator before
    the very first row is left out (so long as the row definition
    is at least on a newline after the table attribute stuff.)