MFH: r448769

www/kanboard: Update to 1.0.46

Changes: https://github.com/kanboard/kanboard/blob/master/ChangeLog
PR: 221826
Submitted by: Bart Wrobel <bsd@if0.eu> (maintainer)
Security: CVE-2017-12850
Security: CVE-2017-12851

Approved by: ports-secteam (delphij)