
The change to make Notification an StButton (06d2c0af, bug 642978) broke links, because the link actor would ignore the button-press-event, allowing the notification actor to receive it and get a pointer grab, and so the link actor would never see the button-release-event. Fix that by accepting and discarding the button-press-event. https://bugzilla.gnome.org/show_bug.cgi?id=645613