fixing configuration options. Patch by Fredrik Jervfors <sqm_admin at fimbul.net>

plugins/administrator/defines.php

@@ -150,8 +150,6 @@ $defcfg = array( '$config_version' => array( 'name' => _("Config File Version"),
 											  'default' => false ),
                  '$invert_time' => array( 'name' => _("Invert Time"),
                                           'type' => SMOPT_TYPE_BOOLEAN ),
-                 '$default_use_mdn' => array( 'name' => _("Use Confirmation Flags"),
-                                              'type' => SMOPT_TYPE_BOOLEAN ),                                          
                  /* --------------------------------------------------------*/
                  'Group3' => array( 'name' => _("Folders Defaults"),
                                     'type' => SMOPT_TYPE_TITLE ),
@@ -228,7 +226,7 @@ $defcfg = array( '$config_version' => array( 'name' => _("Config File Version"),
                                                     'type' => SMOPT_TYPE_BOOLEAN ),
                  '$hide_sm_attributions' => array( 'name' => _("Hide SM attributions"),
                                                    'type' => SMOPT_TYPE_BOOLEAN ),
-                 'default_use_mdn' => array( 'name' => _("Enable use of delivery receipts"),
+                 '$default_use_mdn' => array( 'name' => _("Enable use of delivery receipts"),
                                              'type' => SMOPT_TYPE_BOOLEAN ),
                  '$edit_identity' => array( 'name' => _("Allow editing of identities"),
                                             'type' => SMOPT_TYPE_BOOLEAN ),