Simplify table handling.
Simplify table handling.

andrewleech/WeasyPrint,jasco/WeasyPrint,prepare/TestWeasyPrint,andrewleech/WeasyPrint,jasco/WeasyPrint,marclaporte/WeasyPrint,prepare/TestWeasyPrint,Kozea/WeasyPrint,marclaporte/WeasyPrint,Kozea/WeasyPrint