Merge pull request #630 from mozilla/feature/web-push

scripts/hab-build-and-push.sh

src/assets/stylesheets/entry.scss

src/assets/stylesheets/shared.scss

src/assets/translations.data.json

src/hub.js

src/hub.service.js

src/react-components/ui-root.js

src/subscriptions.js

src/utils/hub-channel.js

webpack.config.js