added homepage contact section to styleguide
Merge branch 'master' of https://github.com/moneyadviceservice/frontend into feature/home-contact-us

Conflicts:
	app/assets/stylesheets/_enhanced.scss
updated class naming

inline with frontend docs
Merge branch 'master' of https://github.com/moneyadviceservice/frontend into feature/home-contact-us
updated translation string names + added url

re. comments in pull request, string value + names updated
Merge pull request #167 from moneyadviceservice/feature/home-contact-us

added homepage contact section to styleguide