0d1ac8cb5b
The design calls for raising all windows for a given app in certain circumstances; implement this. The new _focus method raises all windows for the app if it's running. We further change the _activate method (which a lot of the shell UI calls now) to invoke _focus for the running case, which means that e.g. the application well will now raise all app windows. https://bugzilla.gnome.org/show_bug.cgi?id=616051