Passing control `name` to validate:(value, name)

When we use one validate function across all editable controls, passing a `name` should help validating individual controls.  Let me know if there is a better way to achieve this.

I had requirement of having customized validations for each field. (I could have created for individual controls, but passing name helped me)

```javascript
$('.xEditable').editable({ validate: validateEditArgs});
```