58da16c786
With the message tray no longer being a distinctive UI element, the existing <super>m shortcut for viewing the notification list is no longer mnemonic. It is also less convenient as it requires both hands with most keyboards. So make <super>v the new default to _view_ notifications, which matches the corresponding Windows default. The previous default is kept as secondary shortcut to ease the transition. https://bugzilla.gnome.org/show_bug.cgi?id=687986