About Page: Add release video and update post embed.

Merge of [35839] to the 4.4 branch.

Props camikaos, siobhan, rosso99, wonderboymusic.
Fixes #34663.
Built from https://develop.svn.wordpress.org/branches/4.4@35840


git-svn-id: http://core.svn.wordpress.org/branches/4.4@35804 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -21,6 +21,12 @@ if ( current_user_can( 'install_plugins' ) ) {
 	wp_enqueue_script( 'plugin-install' );
 }
 
+$video_url = 'https://videopress.com/embed/J44FHXvg?hd=true';
+$locale    = str_replace( '_', '-', get_locale() );
+list( $locale ) = explode( '-', $locale );
+if ( 'en' !== $locale ) {
+	$video_url = add_query_arg( 'defaultLangCode', $locale, $video_url );
+}
 
 wp_oembed_add_host_js();
 
@@ -42,6 +48,13 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 			<a href="freedoms.php" class="nav-tab"><?php _e( 'Freedoms' ); ?></a>
 		</h2>
 
+		<div class="headline-feature feature-video">
+			<iframe width="1050" height="591" src="<?php echo esc_url( $video_url ); ?>" frameborder="0" allowfullscreen></iframe>
+			<script src="https://videopress.com/videopress-iframe.js"></script>
+		</div>
+
+		<hr>
+
 		<div class="headline-feature feature-section one-col">
 			<h2><?php _e( 'Twenty Sixteen' ); ?></h2>
 			<div class="media-container">
@@ -83,7 +96,7 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 		<div class="feature-section two-col">
 			<div class="col">
 				<div class="embed-container">
-					<blockquote data-secret="OcUe7B6Edh" class="wp-embedded-content"><a href="https://make.wordpress.org/core/2015/10/28/new-embeds-feature-in-wordpress-4-4/">New Embeds Feature in WordPress 4.4</a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="display:none;" src="https://make.wordpress.org/core/2015/10/28/new-embeds-feature-in-wordpress-4-4/embed/#?secret=OcUe7B6Edh" data-secret="OcUe7B6Edh" width="600" height="338" title="Embedded WordPress Post" frameborder="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>
+					<blockquote data-secret="OcUe7B6Edh" class="wp-embedded-content"><a href="https://wordpress.org/news/2015/12/clifford/">WordPress 4.4 &ldquo;Clifford&rdquo;</a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="display:none;" src="https://wordpress.org/news/2015/12/clifford/embed/#?secret=OcUe7B6Edh" data-secret="OcUe7B6Edh" width="600" height="338" title="<?php esc_attr_e( 'Embedded WordPress Post' ); ?>" frameborder="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>
 				</div>
 			</div>
 			<div class="col">

wp-admin/css/about-rtl.css

@@ -181,7 +181,7 @@
 /* 2.1 - Typography */
 
 .about-wrap .headline-feature h2 {
-	margin: 50px 0 30px;
+	margin: 30px 0 30px;
 	font-size: 2.2em;
 	font-weight: 300;
 	line-height: 1.3;
@@ -226,11 +226,12 @@
 
 /* 2.2 - Structure */
 
-.about-wrap .feature-video {
+.about-wrap .headline-feature.feature-video {
 	position: relative;
 	margin: 40px 0;
-	padding-bottom: 56.25%; /* video is 1280 x 720 */
+	padding-bottom: 56.25%;
 	width: 100%;
+	max-width: 100%;
 	height: 0;
 	text-align: center;
 }

wp-admin/css/about.css

@@ -181,7 +181,7 @@
 /* 2.1 - Typography */
 
 .about-wrap .headline-feature h2 {
-	margin: 50px 0 30px;
+	margin: 30px 0 30px;
 	font-size: 2.2em;
 	font-weight: 300;
 	line-height: 1.3;
@@ -226,11 +226,12 @@
 
 /* 2.2 - Structure */
 
-.about-wrap .feature-video {
+.about-wrap .headline-feature.feature-video {
 	position: relative;
 	margin: 40px 0;
-	padding-bottom: 56.25%; /* video is 1280 x 720 */
+	padding-bottom: 56.25%;
 	width: 100%;
+	max-width: 100%;
 	height: 0;
 	text-align: center;
 }

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-RC1-35838';
+$wp_version = '4.4-RC1-35840';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.