chore(package): update webpack to version 3.9.1
chore(package): update webpack to version 3.9.1

Closes #1780
thelounge/lounge,FryDay/lounge,thelounge/lounge,ScoutLink/lounge,williamboman/lounge,MaxLeiter/lounge,FryDay/lounge,FryDay/lounge,williamboman/lounge,realies/lounge,ScoutLink/lounge,williamboman/lounge,MaxLeiter/lounge,MaxLeiter/lounge,realies/lounge,realies/lounge,ScoutLink/lounge