MFH: r455354

Securityupdate to 4.9.1:

www/wordpress
russian/wordpress [1]
chinese/wordpress-zh_CN
japanese/wordpress
german/wordpress
french/wordpress

Changelog:
https://codex.wordpress.org/Version_4.9.1
https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/

PR: 223982 [1]
Submitted by: Mikhail Timofeev <9267096@gmail.com> (maintainer) [1]
Approved by: tcberner (mentor)
Security: a2589511-d6ba-11e7-88dd-00e04c1ea73d
Differential Revision: https://reviews.freebsd.org/D13337

Approved by: ports-secteam (swills)