fix turning off tiger overlay, fixes #1349
fix turning off tiger overlay, fixes #1349

kepta/iD,energiekollektiv/openmod.sh-id,ngageoint/hootenanny-ui,kartta-labs/iD,bagage/iD,kartta-labs/iD,energiekollektiv/openmod.sh-id,AndreasHae/iD,mapmeld/iD,edpop/iD,ngageoint/hootenanny-ui,morray/iD,zbycz/iD,1ec5/iD,digidem/iD,morray/iD,kartta-labs/iD,1ec5/iD,digidem/iD,AndreasHae/iD,openstreetmap/iD,edpop/iD,bagage/iD,tbicr/iD,tbicr/iD,zbycz/iD,1ec5/iD,mapmeld/iD,edpop/iD,AndreasHae/iD,andreic-telenav/iD,bagage/iD,andreic-telenav/iD,openstreetmap/iD,openstreetmap/iD,mapmeld/iD,ngageoint/hootenanny-ui,kepta/iD