- moved check upgrade feed code to admin/include/functions_upgrade.php
- refactored some code (shorter and somehow faster - but nothing revolutionary)
- decrease lost space in permalinks.tpl and hard coded column width (was illisible)
git-svn-id: http://piwigo.org/svn/branches/2.0@3137 68402e56-0260-453c-a942-63ccdbb3a9ee