Rename 'Knowledgebase' subnavigation to FAQ

include/class.nav.php

@@ -123,7 +123,7 @@ class StaffNav {
                     $subnav[]=array('desc'=>'My Profile','href'=>'profile.php','iconclass'=>'users');
                     break;
                 case 'kbase':
-                    $subnav[]=array('desc'=>'Knowledgebase','href'=>'kb.php', 'urls'=>array('faq.php'), 'iconclass'=>'kb');
+                    $subnav[]=array('desc'=>'FAQs','href'=>'kb.php', 'urls'=>array('faq.php'), 'iconclass'=>'kb');
                     if($staff) {
                         if($staff->canManageFAQ())
                             $subnav[]=array('desc'=>'Categories','href'=>'categories.php','iconclass'=>'faq-categories');