New port: www/webtrees20: Online genealogy viewer

webtrees is the web's leading online collaborative genealogy application.
webtrees works from standard GEDCOM files, and is therefore compatible
with every major desktop application. webtrees aims to be efficient and
effective by using the right combination of third-party tools, design
techniques and open standards.

WWW: http://webtrees.net/

PR: 250883
Submitted by: Andre Rikkert de Koe <freebsd-ports@andre.rikkertdekoe.nl>