Fixed the deep linking data-orbit-link "active" class issue.

The below data-orbit-link classes would add active, but not delete the previous; With the current markup, the old was asking for a ul, which does not exist in the on-site example This method just removes all other active links for data-orbit-link so `active` class css markup can be added for custom effects on active links.


```

<a data-orbit-link="headline-1" class="small button">
  Goto Slide 1
</a>
<a data-orbit-link="headline-2" class="small button">
  Goto Slide 2
</a>
<a data-orbit-link="headline-3" class="small button">
  Goto Slide 3
</a>

```