Ascii_folding and aggressive splitting for Italian

I'd love to be able to do this less hackily but Elasticsearch needs
https://github.com/elasticsearch/elasticsearch/pull/5814 for that and they
aren't making any progress on that....

DEPLOYMENT: This won't do anything until we rebuild the wiki.  It also
only works on Italian.

Bug: 63633
Change-Id: Ie3fe6c10a340f119648bd828f31b6717a0282ab6
Merge "Ascii_folding and aggressive splitting for Italian"