'text-align: top' is implemented, remove a hack for Acid 2.
'text-align: top' is implemented, remove a hack for Acid 2.

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