Create route and view to display an existing API Backend

[brylie]

Create a view for displaying API backend. Related to #324.

Definition of done

• Create template to display fields of the API schema, with HTML markup.
  • display at least the required fields for the API, as they should be present in any given API
• Create route to display a given API (e.g. /api/{id})
• Populate template with data taken from the API Id passed in from the route

[JuusoV]

Todo: Styling.
Required fields (Optional: false) are in place and rendered in template in url: /api/API_ID_HERE/view