Show option to manage session fields for admin only

main/admin/index.php

@@ -274,9 +274,8 @@ if (api_is_platform_admin()) {
         $items[] = array('url'=>'user_move_stats.php', 	'label' => get_lang('MoveUserStats'));
     }
     $items[] = array('url'=>'career_dashboard.php', 	'label' => get_lang('CareersAndPromotions'));
-}
-
 $items[] = array('url'=>'extra_fields.php?type=session', 	'label' => get_lang('ManageSessionFields'));
+}
 
 $blocks['sessions']['items'] = $items;
 $blocks['sessions']['extra'] = null;