News/Articles: use CMS for SEO tags

[kierenhyl]

Description

Display the correct open graph information for the current article.

Motivation

So when the articles/news piece gets shared on social media, it displays properly.

Acceptance Criteria

• The feature image into the 'og:image' tag
• The title into the 'og:title'
• The description as 'og:description'
• Any other relevant open graph tags

Dependencies

This should be done after or in parallel to #265 and be run off the information provided by medium.