mail/roundcube: update 1.2.2 -> 1.2.3; add NO_ARCH while here

Changes: https://github.com/roundcube/roundcubemail/wiki/Changelog#release-123

PR: 214925
Submitted by: brnrd
Approved by: ports-secteam (with hat)
Security: https://vuxml.FreeBSD.org/freebsd/125f5958-b611-11e6-a9a5-b499baebfeaf.html
MFH: 2016Q4
X-MFH-With: r423243, r423250, r423479