Add portrait rotation code, current images, and the template used for Glamdrol.

website/frontpage/portrait-rotation/README

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+New files for the wesnoth.org frontpage portrait rotation
+should be made based on the template file in this directory.
+I personally recommend using the JPEG format with some
+appropriate parameters (and a good exporter program) so that
+the images are neither too large in file size, nor look
+ugly/blurry/with compression artifacts.
+
+All image files should use the *.jpg extension; otherwise
+you'll need to change selector.php.
+
+The selector.php code may be used in place of an actual
+image file in CSS, HTML, whatever; the client just tries to
+fetch it and the server runs the PHP, delivering one of the
+*.jpg files in the directory.
+
+-- Ignacio
+

website/frontpage/portrait-rotation/selector.php

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+<?php
+/*
+ * Random image selector by Ignacio R. Morelle <shadowm2006@gmail.com>
+ * This file is in public domain.
+ */
+
+$d_entries = glob(dirname(__FILE__)."/*.jpg");
+$index = rand(0,sizeof($d_entries)-1);
+$d_entry = $d_entries[$index];
+
+if(file_exists($d_entry)) {
+    header('Content-type: image/jpeg');
+    header('Pragma: no-cache');
+
+    ob_clean();
+    flush();
+    readfile($d_entry);
+}
+
+exit;
+
+?>