URL rewriting: capable of fully working with urls without ?

URL rewriting: works with image file instead of image id (change
make_picture_url to generate urls with file name instead of image id)

URL rewriting: completely works with category/best_rated and
picture/best_rated/534 (change 'category.php?' to 'category' in make_index_url
and 'picture.php?' to 'picture' in make_picture_url to see it)

fix: picture category display in upper bar

fix: function rate_picture variables and use of the new user type

fix: caddie icon appears now on category page

fix: admin element_set sql query was using storage_category_id column
(column has moved to #image_categories)

fix: replaced some old $_GET[xxx] with $page[xxx]

fix: pictures have metadata url (use ? parameter - might change later)

git-svn-id: http://piwigo.org/svn/trunk@1092 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions_session.inc.php

@@ -81,11 +81,26 @@ function cookie_path()
   if ( isset($_SERVER['REDIRECT_URL']) )
   { // mod_rewrite is activated for upper level directories. we must set the
     // cookie to the path shown in the browser otherwise it will be discarded.
-    $scr = $_SERVER['REDIRECT_URL'];
+    if ( isset($_SERVER['PATH_INFO']) )
+    {
+      $idx = strpos( $_SERVER['REDIRECT_URL'], $_SERVER['PATH_INFO'] );
+      if ($idx !== false)
+      {
+        $scr = substr($_SERVER['REDIRECT_URL'], 0, $idx);
+      }
+      else
+      {//this should never happen
+        $scr='//';
+      }
+    }
+    else
+    {
+      $scr = $_SERVER['REDIRECT_URL'];
+    }
   }
   else
   {
-    $scr = $_SERVER['PHP_SELF'];
+    $scr = $_SERVER['SCRIPT_NAME'];
   }
   return substr($scr,0,strrpos( $scr,'/'));
 }