merge r3207 from trunk to branch 2.0.

Add "tags" parameter for template extensions

git-svn-id: http://piwigo.org/svn/branches/2.0@3208 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/extend_for_templates.php

@@ -60,7 +60,9 @@ $relevant_parameters = array(
     'posted-monthly-calendar',
     'search',
     'flat',
-    'list',); /* <=> Random */
+    'list', /* <=> Random */
+    'tags',
+    ); 
   $query = '
 SELECT permalink
   FROM '.CATEGORIES_TABLE.'

include/template.class.php

@@ -199,7 +199,7 @@ class Template {
         return false;
       }
 
-      if ((stripos(implode('/',array_keys($_GET)), $param) > 0 or $param == 'N/A')
+      if ((stripos(implode('',array_keys($_GET)), '/'.$param) !== false or $param == 'N/A')
         and (preg_match('/'.preg_quote($tpl,'/').'$/', $this->get_template_dir()) or $tpl == 'N/A')
         and (!isset($this->extents[$handle]) or $overwrite)
         and file_exists($dir . $filename))