new: cleaner URL. Instead of category.php?cat=search&search=123&start=42,

you now have category.php?/search/123/start-42. Functions make_index_url and
make_picture_url build these new URLs. Functions duplicate_picture_url and
duplicate_index_url provide shortcuts to URL creation. The current main page
page is still category.php but this can be modified easily in make_index_url
function. In this first version, no backward compatibility. Calendar
definition in URL must be discussed with rvelices.

improvement: picture.php redesigned. First actions like "set as
representative" or "delete a comment" which all lead to a redirection. Then
the page (the big mess) and includes of new sub pages to manage specific
parts of the page (metadata, user comments, rates).

new: with the cleaner URL comes a new terminology. $page['cat'] doesn't
exist anymore. $page['section'] is among 'categories', 'tags' (TODO),
'list', 'most_seen'... And sub parameters are set : $page['category'] if
$page['section'] is "categories". See URL analyse in
include/section_init.inc.php for details.


git-svn-id: http://piwigo.org/svn/trunk@1082 68402e56-0260-453c-a942-63ccdbb3a9ee

admin.php

@@ -95,7 +95,7 @@ $template->assign_vars(
     'U_THUMBNAILS'=> $link_start.'thumbnail',
     'U_USERS'=> $link_start.'user_list',
     'U_GROUPS'=> $link_start.'group_list',
-    'U_RETURN'=> PHPWG_ROOT_PATH.'category.php',
+    'U_RETURN'=> make_index_url(),
     'U_ADMIN'=> PHPWG_ROOT_PATH.'admin.php',
     'L_ADMIN' => $lang['admin'],
     'L_ADMIN_HINT' => $lang['hint_admin']