selected icon class of btn-warning should not be removed when navigating with arrows
The `btn-warning` class for the selected icon should remain in the markup on icon page navigation.

steps to reproduce:
- choose an icon from the picker
- reopen the picker 
- the `btn-warning` class is present on the previously selected icon
- navigate to another page with the arrows 
- navigate back to the previous page with the arrows
- the `btn-warning` class has been removed
