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/edit-comments.php

@@ -140,7 +140,7 @@ require_once( ABSPATH . 'wp-admin/admin-header.php' );
 ?>
 
 <div class="wrap">
-<h2><?php
+<h1><?php
 if ( $post_id )
 	echo sprintf( __( 'Comments on &#8220;%s&#8221;' ),
 		sprintf( '<a href="%s">%s</a>',
@@ -153,7 +153,7 @@ else
 
 if ( isset($_REQUEST['s']) && $_REQUEST['s'] )
 	echo '<span class="subtitle">' . sprintf( __( 'Search results for &#8220;%s&#8221;' ), wp_html_excerpt( esc_html( wp_unslash( $_REQUEST['s'] ) ), 50, '&hellip;' ) ) . '</span>'; ?>
-</h2>
+</h1>
 
 <?php
 if ( isset( $_REQUEST['error'] ) ) {