Revert "chore(package): update webpack-dev-middleware to version 1.8.2"
Revert "chore(package): update webpack-dev-middleware to version 1.8.2"

This reverts commit fefb2495cfe041bfd784204fc1a501955bdbfd70.

aviarypl/mozilla-l10n-addons-frontend,squarewave/addons-frontend,muffinresearch/addons-frontend,mozilla/addons-frontend,jasonthomas/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,jasonthomas/addons-frontend,mozilla/addons-frontend,mstriemer/addons-frontend,muffinresearch/addons-frontend,kumar303/addons-frontend,tsl143/addons-frontend,squarewave/addons-frontend,mozilla/addons-frontend,muffinresearch/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,jasonthomas/addons-frontend,mstriemer/addons-frontend,mstriemer/addons-frontend,kumar303/addons-frontend,squarewave/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend