if associate or dissociate from a group, synchronize_user

git-svn-id: http://piwigo.org/svn/branches/release-1_3@260 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/user_modify.php

@@ -103,6 +103,8 @@ if ( isset( $_POST['submit'] ) )
   $query.= ' ('.$_GET['user_id'].','.$_POST['associate'].')';
   $query.= ';';
   mysql_query( $query );
+  // synchronize category informations for this user
+  synchronize_user( $_GET['user_id'] );
 }
 //-------------------------------------------------------------- errors display
 if ( sizeof( $error ) != 0 )