add multiple slots in gesture detector So that gesture detecting in one slot won't block gestures in the other slots.
add multiple slots in gesture detector
So that gesture detecting in one slot won't block gestures in the other slots.

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