[dash] Change section titles to match 20091114 mockup

Documents is changed to Items, and add "& Devices" to Places.

https://bugzilla.gnome.org/show_bug.cgi?id=605491

js/ui/placeDisplay.js

@@ -516,7 +516,7 @@ PlaceSearchProvider.prototype = {
     __proto__: Search.SearchProvider.prototype,
 
     _init: function() {
-        Search.SearchProvider.prototype._init.call(this, _("PLACES"));
+        Search.SearchProvider.prototype._init.call(this, _("PLACES & DEVICES"));
     },
 
     getResultMeta: function(resultId) {