msgs are saved in send_redirect now, less code duplication needed

inc/actions.php

@@ -387,16 +387,6 @@ function act_revert($act){
 function act_redirect($id,$preact){
     global $PRE;
     global $TEXT;
-    global $MSG;
-
-    //are there any undisplayed messages? keep them in session for display
-    //on the next page
-    if(isset($MSG) && count($MSG)){
-        //reopen session, store data and close session again
-        @session_start();
-        $_SESSION[DOKU_COOKIE]['msg'] = $MSG;
-        session_write_close();
-    }
 
     $opts = array(
             'id'       => $id,

lib/plugins/plugin/classes/ap_manage.class.php

@@ -113,23 +113,14 @@ class ap_manage {
      *  Refresh plugin list
      */
     function refresh() {
-        global $MSG,$config_cascade;
-
-        //are there any undisplayed messages? keep them in session for display
-        if (isset($MSG) && count($MSG)){
-            //reopen session, store data and close session again
-            @session_start();
-            $_SESSION[DOKU_COOKIE]['msg'] = $MSG;
-            session_write_close();
-        }
+        global $config_cascade;
 
         // expire dokuwiki caches
         // touching local.php expires wiki page, JS and CSS caches
         @touch(reset($config_cascade['main']['local']));
 
         // update latest plugin date - FIXME
-        header('Location: '.wl($ID).'?do=admin&page=plugin');
-        exit();
+        send_redirect(wl($ID,array('do'=>'admin','page'=>'plugin'),true));
     }
 
     /**