Feature Request: I18n cancel link

Currently the cancel link has a hardcoded english message and a &times; that is not changeable. 

Proposal:

instead of:

```js 
  showCancelLink: true
```

how about:

```js
  cancel: {
    enable: true,
    caption: '&times;', // can be html
    aria-label: 'aria-label is only added to the component if config is present and != null',
  }
```
