• www/piwigo: Update from 2.8.6 to 2.9.0

• Changelog: http://piwigo.org/releases/2.9.0

PR: 219985
Submitted by: Ralf van der Enden <tremere at cainites.com> (maintainer)
Approved by: miwi (mentor)
Differential Revision: https://reviews.freebsd.org/D11196