fix tag strip on export
fix tag strip on export

we must make sure to include spaces around tags or they can't be
found

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