Use modules to expose components individual logic and compile
them into a single JavaScript file using webpack and ES6. Refactor
emergency banner JavaScript as an example. Still a work in progress,
need to refactor the configuration and further components.

Setup eslint to check for linting errors within our JavaScript
using the shared NHS.UK configuration for eslint.
https://github.com/nhsuk/eslint-config-nhsuk

Create a gulp task to compile our JavaScript using the webpack
gulp plugin. Deleting the old build folder and using the main dist
folder for our built JavaScript.

The word 'to' was missing from the sentence for the instructions
to wait for the feedback banner to display.

Refactor the feedback banner JavaScript so that it can be imported
as a module, using ES6 syntax.

Refactor the skip link JavaScript so that it can be imported
as a module, using ES6 syntax.

Refactor the header JavaScript so that it can be imported
as a module, using ES6 syntax.

Following the webpack development, clean up the gulp tasks
to be more efficent.

Move the eslint configuration file into the tests/linters folder
to be with the sass-lint configuration. Also run both the linters on
the npm test command.

Setup htmlhint to lint our HTML and fix any issues that
were reported in various pages and templates.

…ples

Add documentation for importing ES6 JavaScript modules and also
delete documentation for specific tools or technologies such as
gulp and expressjs.

The versioned assets should not included within the npm
installation directory.

The skip link js wasn't creating the click and blur events properly.
Also added DOMContentLoaded event to all the imported components so
they don't fire before DOM has loaded.