We weren't showing the year when a page was created/updated, and we
were displaying the created date instead of the updated one.
Co-Authored-By: Diego Calvo <diego.calvo@enreda.coop>
This way it's easier to test; changing it will also be easier.
During my experiments I made a mistake which wasn't covered by the test
suite. We're adding a test for this case.
Note we're using `i18n_content` in the component instead of `content`
because there's already a `content` method provided by ViewComponent.