Allow CSS class from input data

The JSON returned by autocomplete service can add a data to add a CSS class to the token. For exemple, if we receive :

```json
{
    "id": 12,
    "name": "Alabama",
    "country_code": "US"
}
```

Adding `["country_code"]` as a `propertyToCss`, a new class will be added to the token with pattern : 
`<token_default_class>[-theme]-<type>-<value>`

With previous example : 
`token-input-token-facebook-country_code-US`