Proper heading for admin screens.

First step towards restoring a good heading structure in wp-admin.
The previous `<h1>` contained the site title and a link to the front page and was removed with the toolbar refactoring in 3.2.

Props joedolson, afercia.
Fixes #31650.



git-svn-id: https://develop.svn.wordpress.org/trunk@32974 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/network/settings.php

@@ -119,7 +119,7 @@ if ( isset( $_GET['updated'] ) ) {
 ?>
 
 <div class="wrap">
-	<h2><?php echo esc_html( $title ); ?></h2>
+	<h1><?php echo esc_html( $title ); ?></h1>
 	<form method="post" action="settings.php" novalidate="novalidate">
 		<?php wp_nonce_field( 'siteoptions' ); ?>
 		<h3><?php _e( 'Operational Settings' ); ?></h3>