Fix importing urllib.quote on Py 2.x
Fix importing urllib.quote on Py 2.x

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