Remove unnecessary history save
Remove unnecessary history save

The intro saves and restored the current state via toJSON/fromJSON.
1ec5/iD,ngageoint/hootenanny-ui,zbycz/iD,AndreasHae/iD,1ec5/iD,openstreetmap/iD,tbicr/iD,morray/iD,kepta/iD,kartta-labs/iD,mapmeld/iD,digidem/iD,energiekollektiv/openmod.sh-id,bagage/iD,edpop/iD,morray/iD,AndreasHae/iD,tbicr/iD,AndreasHae/iD,andreic-telenav/iD,edpop/iD,mapmeld/iD,ngageoint/hootenanny-ui,openstreetmap/iD,energiekollektiv/openmod.sh-id,openstreetmap/iD,bagage/iD,kartta-labs/iD,kartta-labs/iD,bagage/iD,edpop/iD,digidem/iD,1ec5/iD,andreic-telenav/iD,kepta/iD,ngageoint/hootenanny-ui,mapmeld/iD,zbycz/iD