- update www/firefox-esr to 17.0.2
- update www/seamonkey to 2.15 (enigmail to 1.5.0)
- remove QT4 option to avoid confusion (it turned out to be too experimental)
In collaboration with: Jan Beich <jbeich@tormail.org>
Security: http://www.vuxml.org/freebsd/a4ed6632-5aa9-11e2-8fcb-c8600054b392.html