Add ability to run scripts per page

Currently all scripts are added at the end of the page, in layout.html.

This means if you have a script on one page that relies on jQuery, there’s no way to add it after jQuery is loaded.

Propose changing this in layout.html

{% block body_end %}
  {% include "includes/scripts.html" %}
  <!-- GOV.UK Prototype kit {{releaseVersion}} -->
{% endblock %}

to

{% block body_end %}
  {% include "includes/scripts.html" %}
  {% block page_script %}{% endblock %}
  <!-- GOV.UK Prototype kit {{releaseVersion}} -->
{% endblock %}

[joelanman]

cool, thanks, I’ve made a PR: https://github.com/alphagov/govuk_prototype_kit/pull/373

[timpaul]

#373 is merged so closing this now.