88c7039ebe
The message list is not only a replacement for the calendar events list, it will also take over the notification summary from the message tray. As we start drawing events from other sources than calendars, hiding it based on whether or not any calendars have been set up is no longer appropriate, so always include it in the calendar drop-down now. https://bugzilla.gnome.org/show_bug.cgi?id=744817