Bug 1763 fixed : [PostgreSQL] double quote used in queries

Merge from trunk

git-svn-id: http://piwigo.org/svn/branches/2.1@6665 68402e56-0260-453c-a942-63ccdbb3a9ee

include/section_init.inc.php

@@ -259,7 +259,7 @@ if ('categories' == $page['section'])
 SELECT id
   FROM '.CATEGORIES_TABLE.'
   WHERE
-    uppercats LIKE "'.$page['category']['uppercats'].',%" '
+    uppercats LIKE \''.$page['category']['uppercats'].',%\' '
     .get_sql_condition_FandF(
       array
         (