revert wrong cleanup for commit cf3cc65c0377ef2e499c2a88490df985ae1eb5f2
revert wrong cleanup for commit cf3cc65c0377ef2e499c2a88490df985ae1eb5f2

self.layout must be updated for any widget that inherits
from focusmanager. Previous commit removed related code on
menu item update.

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