Mark conversation as read if open and window focused

Messages that are received in the active conversation while the window
is focused, are automatically marked as read.

The conversation appears as unread for a split second as the incoming message
arrives but it gets marked as read as soon as the message is displayed.

js/conversation_controller.js

@@ -30,9 +30,10 @@
         updateUnreadCount: function(model, count) {
             var prev = model.previous('unreadCount') || 0;
             var newUnreadCount = storage.get("unreadCount", 0) - (prev - count);
-            setUnreadCount(newUnreadCount);
             storage.remove("unreadCount");
             storage.put("unreadCount", newUnreadCount);
+
+            setUnreadCount(newUnreadCount);
         }
     }))();