Customize page_header_toolbar in admin orders

[zanpo]

Hello, I am on PS 1.6.1.9 and trying to add the previous and next buttons in the page_header_toolbar.tpl, and also add the green markup when an order has the "gift wrapping" option added, but none of the buttons seem to work, they are grayed out and don't do nothing, also you can see that the order number is not displayed also. I just copied the code from 

admindirectory/themes/default/template/controllers/orders/helpers/view/view.tpl

like this:

<i class="icon-credit-card"></i>
{l s='Order'}
<span class="badge">{$order->reference}</span>
<span class="badge">{l s="#"}{$order->id}</span>
<div class="panel-heading-action">
<div class="btn-group">
<a class="btn btn-default{if !$previousOrder} disabled{/if}" href="{$link->getAdminLink('AdminOrders')|escape:'html':'UTF-8'}&vieworder&id_order={$previousOrder|intval}">
<i class="icon-backward"></i>
</a>
<a class="btn btn-default{if !$nextOrder} disabled{/if}" href="{$link->getAdminLink('AdminOrders')|escape:'html':'UTF-8'}&vieworder&id_order={$nextOrder|intval}">
<i class="icon-forward"></i>
</a>
</div>
</div>

and put it inside:

admindirectory/themes/default/template/page_header_toolbar.tpl

What am I missing? thanks!