www/groupoffice: Update from 6.2.59 to 6.2.61

[joneum]

Summary

www/groupoffice: Update from 6.2.59 to 6.2.61

-Changelog: https://sourceforge.net/p/group-office/code/HEAD/tree/branches/groupoffice-6.2/www/CHANGELOG.TXT

Approved by: xxx (mentor)
#Differential Revision: https://reviews.freebsd.org/Dxxxxx

Test Plan

~...www/groupoffice: portlint -AC [18:55:45]
WARN: Makefile: for new port, make $FreeBSD$ tag in comment section empty, to make SVN happy.
WARN: Makefile: "RESTRICTED" found. do not forget to update ports/LEGAL.
0 fatal errors and 2 warnings found.

poudriere testport:

10.3-amd64
10.3-i386
11.1-amd64
11.1-i386
12.0-CURRENT r323123 amd64
12.0-CURRENT r323123 i386

[mat]

(your mentors seem to be hibernating, so I approve this as portmgr)