style(inputdialog): rename self.input to self.input_widget
style(inputdialog): rename self.input to self.input_widget

frankyifei/koreader,robert00s/koreader,NiLuJe/koreader,pazos/koreader,houqp/koreader,NiLuJe/koreader,Frenzie/koreader,mihailim/koreader,Frenzie/koreader,chihyang/koreader,lgeek/koreader,poire-z/koreader,koreader/koreader,Markismus/koreader,mwoz123/koreader,NickSavage/koreader,poire-z/koreader,koreader/koreader,apletnev/koreader,Hzj-jie/koreader