Add new 'about this version' page (with filler content) and menu item. see #18742.

git-svn-id: http://svn.automattic.com/wordpress/trunk@18745 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -0,0 +1,88 @@
+<?php
+/**
+ * About This Version administration panel.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ */
+
+/** WordPress Administration Bootstrap */
+require_once( './admin.php' );
+
+$title = __( 'About' );
+$parent_file = 'index.php';
+
+add_action( 'admin_head', '_wp_about_add_css' );
+function _wp_about_add_css() { ?>
+	<style type="text/css">
+		.return-to-dashboard {
+			margin: 16px 0 0;
+			font-size: 14px;
+		}
+		.return-to-dashboard a {
+			text-decoration: none;
+		}
+		.wrap h2 {
+			margin-top: 0.6em;
+			font-size: 3.6em;
+			text-shadow: 1px 1px 3px rgba( 0, 0, 0, 0.2 );
+		}
+		.about-text {
+			font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", sans-serif;
+			font-weight: normal;
+			font-size: 1.8em;
+			color: #777;
+			margin: 1.4em 0;
+			line-height: 1.4em;
+			max-width: 600px;
+		}
+		.changelog {
+			font-size: 14px;
+			padding-bottom: 10px;
+		}
+		.changelog h3 {
+			font-size: 18px;
+		}
+		.changelog li {
+			list-style-type: disc;
+			margin-left: 3em;
+		}
+	</style>
+<?php }
+
+include( './admin-header.php' );
+?>
+<div class="wrap">
+
+<div class="return-to-dashboard">
+	<a href="<?php echo admin_url(); ?>"><?php _e('&larr; Return to dashboard'); ?></a>
+</div>
+<h2><?php _e( 'Welcome to WordPress 3.3!' ); ?></h2>
+
+<div class="about-text">WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.</div>
+
+<div class="changelog">
+	<h3><?php _e('For Users'); ?></h3>
+	<ul>
+		<li>Media uploader</li>
+		<li>New-user experience</li>
+		<li>Improved admin bar</li>
+		<li>Responsive admin</li>
+	</ul>
+</div>
+
+<div class="changelog">
+	<h3><?php _e('For Developers'); ?></h3>
+	<ul>
+		<li>Meta API improvements</li>
+		<li>Language packs</li>
+		<li>Permalink performance</li>
+		<li>Nav menus performance</li>
+	</ul>
+</div>
+
+
+</div>
+<?php
+
+include( './admin-footer.php' );

wp-includes/admin-bar.php

@@ -215,6 +215,14 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
 		}
 	}
 
+	// Add WordPress.org link
+	$wp_admin_bar->add_menu( array(
+		'parent' => 'my-blogs',
+		'id'     => 'about',
+		'title'  => __('About This Version'),
+		'href'   => admin_url('about.php'),
+	) );
+
 	// Add WordPress.org link
 	$wp_admin_bar->add_menu( array(
 		'parent' => 'my-blogs',