Now it looks exactly like gmail control

To look exactly the same like gmail label control use following
```javascript
formatCreateNew: function (term) { return "\"" + term + "\" (create new)"; },
```

solves #1100

![combobox](https://f.cloud.github.com/assets/179534/308327/495caff4-96e5-11e2-9889-f333dba40d23.png)