Merge pull request #592 from mozilla/feature/scene-page

src/assets/images/hub-preview-white.png

src/assets/stylesheets/scene-ui.scss

src/assets/stylesheets/scene.scss

src/assets/translations.data.json

src/components/scene-components.js

src/components/scene-preview-camera.js

src/hub.html

src/hub.js

src/react-components/scene-ui.js

src/scene.html

src/scene.js

webpack.config.js