preserve font-style/font-weight
preserve font-style/font-weight

fixes https://anki.lighthouseapp.com/projects/100923-ankidesktop/tickets/333-html-being-changed-after-the-card-is-created

ospalh/libanki3,go38/anki,jakesyl/ruby-card,florianjacob/anki,Stvad/anki,jkitching/anki,jakesyl/ruby-card,hssm/anki,Arthaey/anki,LucasCabello/anki,subfusc/anki,abeyer/anki,weihautin/anki,weihautin/anki,eduOS/anki,hssm/anki,holycrepe/anki,socialpercon/anki-1,xuewenfei/anki,sunclx/anki,kenjhim/anki