lib/model: Drop incoming updates for ignored items (fixes #1701)
lib/model: Drop incoming updates for ignored items (fixes #1701)

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/2975

norgeous/syncthing,xduugu/syncthing,kamadak/syncthing,nrm21/syncthing,kamadak/syncthing,syncthing/syncthing,plouj/syncthing,cherylquirion/syncthing,le9i0nx/syncthing,ProactiveServices/syncthing,rumpelsepp/syncthing,imsodin/syncthing,norgeous/syncthing,syncthing/syncthing,TheBigBear/syncthing,Kudalufi/syncthing,jryans/syncthing,cherylquirion/syncthing,wweich/syncthing,AudriusButkevicius/syncthing,uok/syncthing,alex2108/syncthing,lkwg82/syncthing,wweich/syncthing,imsodin/syncthing,imsodin/syncthing,nrm21/syncthing,syncthing/syncthing,plouj/syncthing,brgmnn/syncthing,rumpelsepp/syncthing,plouj/syncthing,kamadak/syncthing,AudriusButkevicius/syncthing,alex2108/syncthing,jryans/syncthing,syncthing/syncthing,TheBigBear/syncthing,le9i0nx/syncthing,letiemble/syncthing,lkwg82/syncthing,toddleish/syncthing,ProactiveServices/syncthing,brgmnn/syncthing,kluppy/syncthing,jryans/syncthing,toddleish/syncthing,jryans/syncthing,brgmnn/syncthing,rumpelsepp/syncthing,le9i0nx/syncthing,TheBigBear/syncthing,AudriusButkevicius/syncthing,imsodin/syncthing,syncthing/syncthing,norgeous/syncthing,lkwg82/syncthing,norgeous/syncthing,cherylquirion/syncthing,toddleish/syncthing,kluppy/syncthing,imsodin/syncthing,xduugu/syncthing,letiemble/syncthing,AudriusButkevicius/syncthing,TheBigBear/syncthing,syncthing/syncthing,alex2108/syncthing,wweich/syncthing,uok/syncthing,lkwg82/syncthing,nrm21/syncthing,nrm21/syncthing,Kudalufi/syncthing,letiemble/syncthing,rumpelsepp/syncthing,wweich/syncthing,uok/syncthing,letiemble/syncthing,kluppy/syncthing,ProactiveServices/syncthing,le9i0nx/syncthing,toddleish/syncthing,Kudalufi/syncthing,kamadak/syncthing,xduugu/syncthing,plouj/syncthing,xduugu/syncthing,ProactiveServices/syncthing,cherylquirion/syncthing,alex2108/syncthing,brgmnn/syncthing,kluppy/syncthing,Kudalufi/syncthing,uok/syncthing