Move to new React context API + forwardRef + StrictMode

[tkrotoff]

• New context API: https://reactjs.org/docs/context.html
  • Remove prop-types dependency
• forwardRef: https://reactjs.org/docs/forwarding-refs.html
• Strict mode: https://reactjs.org/docs/strict-mode.html
• New component lifecycle methods: https://reactjs.org/docs/react-component.html
  • Deprecated methods: componentWillMount(), componentWillUpdate(), componentWillReceiveProps()
  • New method: static getDerivedStateFromProps()

See also React codemod scripts: https://github.com/reactjs/react-codemod