location: Move settings to gsettings-desktop-schemas

Since these settings are now going to be accessed by
gnome-control-center as well, its more appropriate for them to live in
gsettings-desktop-schemas.

https://bugzilla.gnome.org/show_bug.cgi?id=734483

js/ui/status/location.js

@@ -9,7 +9,7 @@ const PanelMenu = imports.ui.panelMenu;
 const PopupMenu = imports.ui.popupMenu;
 const Shell = imports.gi.Shell;
 
-const LOCATION_SCHEMA = 'org.gnome.shell.location';
+const LOCATION_SCHEMA = 'org.gnome.system.location';
 const MAX_ACCURACY_LEVEL = 'max-accuracy-level';
 const ENABLED = 'enabled';