- remake of Remote sites and Synchronize:

- synchronization for remote and local sites are done by the same code
  - remote sites can update metadata now (not before) - bug 279
  - fixes bug 82: has_high column

- improve feature 280: user sort by filename

- fix path to template mimetypes icons

- bug 284: session cookie lifetime, deletion on logout and corrected issue 
when db upgrades were missing 

git-svn-id: http://piwigo.org/svn/trunk@1029 68402e56-0260-453c-a942-63ccdbb3a9ee

category.php

@@ -37,7 +37,7 @@ if ( isset( $_GET['act'] )
   $_SESSION = array();
   session_unset();
   session_destroy();
-  setcookie(session_name(),'',0,'/');
+  setcookie(session_name(),'',0, cookie_path() );
   $url = 'category.php';
   redirect( $url );
 }