feature 657: permalinks for categories

git-svn-id: http://piwigo.org/svn/trunk@1866 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/plugin.php

@@ -49,8 +49,7 @@ if (count($sections)<2)
 }
 
 $plugin_id = $sections[0];
-$check_db_plugin = get_db_plugins('active', $plugin_id );
-if (empty($check_db_plugin))
+if ( !isset($pwg_loaded_plugins[$plugin_id]) )
 {
   die('Invalid URL - plugin '.$plugin_id.' not active');
 }