Update www/libxul to version 31.2.0
Update www/xpi-conkeror to version 20140911
Prune www/gecko-mediaplayer
Update x11-toolkits/girara to version 0.2.3
Tweak graphics/zathura version 0.2.9
Update graphics/zathura-djvu to version 0.2.3_1
Tweak graphics/zathura-pdf-mupdf version 0.2.6