Update packages

[justhamade]

babel-eslint           7.2.3   7.2.3  8.0.3         devDependencies https://github.com/babel/babel-eslint
babel-jest             20.0.3  20.0.3 21.2.0        devDependencies https://github.com/facebook/jest#readme
eslint-config-airbnb   15.1.0  15.1.0 16.1.0        devDependencies https://github.com/airbnb/javascript
eslint-plugin-jsx-a11y 5.1.1   5.1.1  6.0.3         devDependencies https://github.com/evcohen/eslint-plugin-jsx-a11y#readme
file-loader            0.11.2  0.11.2 1.1.6         devDependencies https://webpack.js.org/loaders/file-loader
grommet                1.9.0   1.9.0  2.0.0-alpha.5 dependencies    http://grommet.io
jest-cli               20.0.4  20.0.4 21.2.1        devDependencies http://facebook.github.io/jest/
path-to-regexp         1.7.0   1.7.0  2.1.0         dependencies    https://github.com/pillarjs/path-to-regexp#readme
react                  15.6.2  15.6.2 16.2.0        dependencies    https://reactjs.org/
react-dev-utils        0.4.2   0.4.2  4.2.1         devDependencies https://github.com/facebookincubator/create-react-app#readme
react-dom              15.6.2  15.6.2 16.2.0        dependencies    https://reactjs.org/
react-redux            4.4.8   4.4.8  5.0.6         dependencies    https://github.com/gaearon/react-redux
react-test-renderer    15.6.2  15.6.2 16.2.0        devDependencies https://reactjs.org/
ws                     1.1.5   1.1.5  3.3.2         dependencies    https://github.com/websockets/ws

Not sure if any of these are breaking changes, some probably are.
Babel is releasing v7 pretty soon so might want to wait for that to do the upgrade. If I have time then I will submit a PR for some of these dependancy upgrades.