Can you include before and after screenshots?

@edwardhorsford Yes good point.

@carolinegreen can you update this with an end-to-end test?

You'll need to two new blocks for autoselect-related tests, and write a test in each: one for if the hint is actually being displayed in the first place using the autoselect: true example, and then one if it doesn't get displayed when the displayHint: false option is set on the other example.

The tests are failing because IE9 doesn't have pointer events; we need to wrap the tests to not run on isIE9 (the variable is already declared but commented at the top of the tests).

I'm closing this PR as it has been open for a considerable amount of time and we're trying to cut down the number of orphaned PRs in alphagov.