fix conflicts of two finger swipe gesture for flipping mode and showing TOC/Bookmark
fix conflicts of two finger swipe gesture for flipping mode and showing TOC/Bookmark

poire-z/koreader,ashhher3/koreader,NickSavage/koreader,pazos/koreader,Markismus/koreader,robert00s/koreader,ashang/koreader,koreader/koreader,noname007/koreader,frankyifei/koreader,Hzj-jie/koreader,chrox/koreader,mwoz123/koreader,houqp/koreader,mihailim/koreader,poire-z/koreader,koreader/koreader,chihyang/koreader,Frenzie/koreader,Frenzie/koreader,NiLuJe/koreader,NiLuJe/koreader,apletnev/koreader,lgeek/koreader