Make notices added in [30459] less ugly.

see #25569, #25571, [30505].
Built from https://develop.svn.wordpress.org/trunk@30657


git-svn-id: http://core.svn.wordpress.org/trunk@30647 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/custom-background.php

@@ -239,7 +239,7 @@ class Custom_Background {
 <h2><?php _e( 'Custom Background' ); ?></h2>
 
 <?php if ( current_user_can( 'customize' ) ) { ?>
-<div class="update-nag hide-if-no-customize">
+<div class="notice notice-info hide-if-no-customize">
 	<p>
 		<?php
 		printf(

wp-admin/custom-header.php

@@ -525,7 +525,7 @@ class Custom_Image_Header {
 <h2><?php _e( 'Custom Header' ); ?></h2>
 
 <?php if ( current_user_can( 'customize' ) ) { ?>
-<div class="update-nag hide-if-no-customize">
+<div class="notice notice-info hide-if-no-customize">
 	<p>
 		<?php
 		printf(

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30656';
+$wp_version = '4.1-beta2-30657';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.