feature 251: Rating For Anonymous users

fix: page['items'] for favorites category and remove old use of $has_next, 
$has_prev in picture.php (slideshow and favorites section)

optimization: one less sql query in picture.php when there are no comments

display of the refresh url in redirect.tpl (useful when debugging with 
browser meta redirects disabled)


git-svn-id: http://piwigo.org/svn/trunk@1041 68402e56-0260-453c-a942-63ccdbb3a9ee

install/phpwebgallery_structure.sql

@@ -173,8 +173,10 @@ DROP TABLE IF EXISTS `phpwebgallery_rate`;
 CREATE TABLE `phpwebgallery_rate` (
   `user_id` smallint(5) NOT NULL default '0',
   `element_id` mediumint(8) unsigned NOT NULL default '0',
+  `anonymous_id` varchar(45) NOT NULL default '',
   `rate` tinyint(2) unsigned NOT NULL default '0',
-  PRIMARY KEY  (`user_id`,`element_id`)
+  `date` date NOT NULL default '0000-00-00',
+  PRIMARY KEY  (`element_id`,`user_id`,`anonymous_id`)
 ) TYPE=MyISAM;
 
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