Add transition_duration, remove testing DifficultyIcon
Add transition_duration, remove testing DifficultyIcon

UselessToucan/osu,NeoAdonis/osu,Nabile-Rahmani/osu,Drezi126/osu,NeoAdonis/osu,naoey/osu,ppy/osu,2yangk23/osu,UselessToucan/osu,DrabWeb/osu,smoogipoo/osu,johnneijzen/osu,smoogipoo/osu,smoogipoo/osu,2yangk23/osu,johnneijzen/osu,smoogipooo/osu,Frontear/osuKyzer,UselessToucan/osu,DrabWeb/osu,naoey/osu,ppy/osu,EVAST9919/osu,peppy/osu,peppy/osu-new,Damnae/osu,ZLima12/osu,ppy/osu,naoey/osu,EVAST9919/osu,DrabWeb/osu,peppy/osu,peppy/osu,NeoAdonis/osu,ZLima12/osu