Fix earlier fix to use display_name not firstname, lastname etc.

htdocs/theme/default/templates/admin/users/edit.tpl

@@ -3,7 +3,7 @@
 {include file="columnfullstart.tpl"}
 <div id="edituser" style="position: relative;">
     <div style="position: absolute; top: 0; right: 0;"><a href="{$WWWROOT}user/view.php?id={$user->id}"><img src="{$WWWROOT}thumb.php?type=profileiconbyid&amp;maxwidth=100&amp;maxheight=100&amp;id={$user->profileicon}" alt=""></a></div>
-    <h2><a href="{$WWWROOT}user/view.php?id={$user->id}">{$user->firstname|escape} {$user->lastname|escape} ({$user->username|escape})</a></h2>
+    <h2><a href="{$WWWROOT}user/view.php?id={$user->id}">{$user|display_name|escape}</a></h2>
     {if !empty($loginas)}
       <div><a href="{$WWWROOT}admin/users/changeuser.php?id={$user->id}">{$loginas}</a></div>
     {/if}