Create some basic frontend in React.js

[BurkovBA]

• [ ] write a basic build system in npm + webpack + sass + babel
• [ ] write a basic frontend with navigation menu and stuff for our future website
• [ ] serve this without backand as a github page in a separate repository for testing purposes

We can copy-paste from https://github.com/BurkovBA/react-starter

[d1skort]

We can use create-react-app: https://github.com/facebookincubator/create-react-app

How to add sass, less ,etc: https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#adding-a-css-preprocessor-sass-less-etc