fix preset grid reference transition
fix preset grid reference transition

fixes #1174

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