Render atom feeds for travel advice countries. Output of atom feed is identical to multipage-frontend’s (and live). Template and tests ported from multipage-frontend.
When reviewing please double-check the routing logic and tests
Add support for rendering atom routes:
Paired with @andrewgarner
Previously, calling a format without an atom feed via: /government/consultations/postgraduate-doctoral-loans.atom Would have 404’d. Now there is atom support this retrieves a content item, but throws a “MissingTemplate” error when it comes to rendering. Catch this error and return a “not acceptable” 406 response. eg The target resource does not have a current representation that would be acceptable to the user agent