Reset Iconpicker
How is it possible to reset the Icon picker?
I want to set during the runtime another icon.

I see it's possible with: `.iconpicker('setIcon', 'fa-wifi')` 
The problem here is the icon picker doesn't shows the selected icon page.

I've done several trials to reset it via:

1.) `.iconpicker('reset')`
2.) Initialize via JS and clear content before:

```
$('#editCategoryIcon').empty().iconpicker({
  align: 'left',
  footer: false,
  icon: icon,
  iconset: 'fontawesome',
  rows: 5,
  search: true,
  searchText: 'Suchen...'
});
```

But I can't figure it out, any ideas?
