Make sure "Add Field" scrolls into view during Area chapter of walkthrough (closes #4417)
Make sure "Add Field" scrolls into view during Area chapter of walkthrough
(closes #4417)

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