nip05: show username and support _ usernames (William Casarin)

Revert removing nip05 badges on profiles (William Casarin)

posting: don't prepad user tag if its a newline (William Casarin)

pushed to refs/heads/master

http://git.jb55.com/damus/commit/080aaf2d1be8a4b272efc93a34474e63cfe4099a.html