How can I add user information to orders administration pages? I'm using Commerce User Profile Pane to capture Drupal Users profile fields directly in the Commerce checkout pages : as I have several custom customer fields (birthday, passport number...), I found this more accurate than storing this data in Billing information.

How can I display the collected informations along with the billing information data (name, address), in the order view page : admin/commerce/orders/%, and in the quick edit view ?

I can't find any view or .tpl for such task.
As per Andy's advices about Drupal Theming, I used devel_themer, and could find immediately the correct template : commerce_backoffice/theme/commerce-order--backoffice.tpl.php.