test: ws_event contact (William Casarin)

fix builder id generation and signing (William Casarin)

ndb: switch to enum for tce types (William Casarin)

fix build (William Casarin)

pushed to nostrdb:refs/heads/master

http://git.jb55.com/nostrdb/commit/fa3657aa3b066bb491ab2691962b8d3527511737.html