Comment 3 for bug 1376258

We currently have a dbus signal which any backend can send to the shell to forcefully refresh given scope. This is however considered a temporary solution, because it doesn't know of aggregated scopes, so if B is aggregated by A, and refreshing of B is requested, it won't refresh A. We should either consider a new mechanism for that, or - if DBUS signal is good enough - make unity-scopes-shell smart about aggregated scopes (child scopes list will probably help).