Italian templates

I've done it for {{it-noun}} and {{it-adj}}, but it will be much more difficult to do it for the conjugation templates because there are so many override parameters.

You might consider adding the ability to specify regexes to match sets of params. That should make things like {{it-conj}} much easier, as well as Module:ar-headword. Actually, it already looks like you generate regexes (or Lua patterns, rather) from the specified named parameters ...