Introduce the Italian language on the /feed/onthisday/{type}/{mm}/{dd} API.
All the available types will be supported, with some limitations:
- the "selected" type will always return an empty list, since the returned HTML can't be parsed using an XPath selector.
- the "births" and "deaths" types will also be empty, since those information are not in the same page (https://it.wikipedia.org/wiki/Nati_il_27_luglio for births, for example)