Upgrade to CRA 1.0.10

[Grsmto]

Neverbland now maintains his own fork of Create React App: as advised by Dan here, it's easier to fork and setup your own react-scripts.
All the Webpack config that was previously in the Neverbuild is now externalised to our fork.
This way Neverbuild will be easier to maintain.
Usage is the same as before, download/clone repo and follow install instructions.

[woffleloffle]

There's a whole bunch of stuff in src/containers/shell.js pertaining to a current client project in this commit. Perhaps just refactor some of that before we merge this?

[Grsmto]

Oops. Should be fixed.

[woffleloffle]

The tests yarn test fails with:

$ yarn test
yarn test v0.27.5
$ react-scripts test --env=jsdom
- Validation Error:

  Module ./node_modules/@neverbland/react-scripts/config/polyfills.js in the setupFiles option was not found.

  Configuration Documentation:
  https://facebook.github.io/jest/docs/configuration.html

error Command failed with exit code 1.

Adding the polyfills.js file back into @neverbland/create-react-app fixes the issue.
I'll create a pull request in the other project. Once I've done that, we can close and merge this?

[Grsmto]

The file shouldn't be there as we don't use it and we use Polyfill.io instead. So instead of adding it back we should change the tests.
Thanks for this!

[woffleloffle]

Okay, cool. Would you do the necessary?
We can catch up about this tomorrow :)