Add altervista.org (#883)
Add altervista.org (#883)

Altervista is a free web hosting service.

Each registered user gets its own subdomain (e.g. username.altervista.org) on
which PHP scripts can be uploaded and executed.

We'd like to properly isolate each subdomain to prevent global cookie setting
on altervista.org and highlight that each subdomain hosts a different site,
unrelated to the others.
publicsuffix/list,publicsuffix/list,publicsuffix/list,publicsuffix/list