intltool is unmaintained nowadays while upstream gettext gained
support for formats like GSettings schemas and .desktop files,
and offers a mechanism to teach it about other XML formats not
yet supported out of the box which we can use for the rest.
So there's nothing stopping us, just make the switch ...
https://bugzilla.gnome.org/show_bug.cgi?id=769073
This makes the gnome-control-center keyboard panel aware of these
bindings so that it can warn about conflicting bindings if the
user tries to use one of these bindings for a different action.
https://bugzilla.gnome.org/show_bug.cgi?id=732385
