add enitity cache
add enitity cache

morray/iD,AndreasHae/iD,AndreasHae/iD,ngageoint/hootenanny-ui,kartta-labs/iD,digidem/iD,ngageoint/hootenanny-ui,openstreetmap/iD,kartta-labs/iD,bagage/iD,1ec5/iD,openstreetmap/iD,kartta-labs/iD,openstreetmap/iD,ngageoint/hootenanny-ui,morray/iD,mapmeld/iD,AndreasHae/iD,mapmeld/iD,1ec5/iD,bagage/iD,1ec5/iD,bagage/iD,digidem/iD,mapmeld/iD