Display the widget type when editing a widget.

#3926


![list3](https://f.cloud.github.com/assets/3273122/1286971/985d101c-2fe7-11e3-8b2c-2b5502a3f90c.png)

![list4](https://f.cloud.github.com/assets/3273122/1286972/9879d972-2fe7-11e3-989d-87249cf5236e.png)