Feature Issue ID 0000601: Filter all public pages with only recent elements

Fix following problem:
- if an image appears in several categories (virtual ones)
- if you click on that image (the thumbnail) - i have several php warnings/errors and nothing is displayed


git-svn-id: http://piwigo.org/svn/trunk@1701 68402e56-0260-453c-a942-63ccdbb3a9ee

include/section_init.inc.php

@@ -429,7 +429,7 @@ WHERE
     {
       // Main query
       $query = '
-SELECT image_id
+SELECT distinct image_id
   FROM '.IMAGE_CATEGORY_TABLE.'
     INNER JOIN '.IMAGES_TABLE.' ON id = image_id
   WHERE