Add add-action element.
Merge branch 'master' into feature/article_page

Conflicts:
	app/assets/stylesheets/components/editorial/_add-action.scss
	app/views/styleguide/shared/_guide.html.erb
Add guide CTA to page and style.
Add the js to control the collasible elements.
Add collasible element HTML.
Add styles for collapsible element.
Changes to the collapsible element.
Merge branch 'master' of https://github.com/moneyadviceservice/frontend into feature/article_page
Merge branch 'feature/article_page' of https://github.com/moneyadviceservice/frontend into feature/article_page
refactored js
add "use strict"
Remove image from action plan and intro component.
Fix - set scrollbars to auto hide on tables.
Add an unstyled button to the component library.
Change HTML to remove hard coded styles.
Hide collapsible sections when js loads.
Replace icomoon font with icon-font
Style collapsible section.
Add bottom margin to intro containing image.
Tweak positioning for the callout