Add menu-vs-2x.png and 2x media-button.png, pngcrush all in wp-admin/images, props empireoflight, see #21019

git-svn-id: http://core.svn.wordpress.org/trunk@21980 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/colors-classic.css

@@ -1859,7 +1859,7 @@ div.wp-menu-image {
 	.menu-icon-settings div.wp-menu-image,
 	.icon16.icon-site,
 	.menu-icon-site div.wp-menu-image {
-		background-image: url('../images/menu-2x.png?ver=20120412');
+		background-image: url('../images/menu-vs-2x.png?ver=20120412');
 		background-size: 390px 64px;
 	}
 }

wp-admin/includes/media.php

@@ -379,7 +379,7 @@ document.body.className = document.body.className.replace('no-js', 'js');
 function media_buttons($editor_id = 'content') {
 	$context = apply_filters('media_buttons_context', __('Upload/Insert %s'));
 
-	$img = '<img src="' . esc_url( admin_url( 'images/media-button.png?ver=20111005' ) ) . '" width="15" height="15" />';
+	$img = '<img src="' . esc_url( admin_url( 'images/media-button.png?ver=20111005' ) ) . '" width="16" height="16" />';
 
 	echo '<a href="' . esc_url( get_upload_iframe_src() ) . '" class="thickbox add_media" id="' . esc_attr( $editor_id ) . '-add_media" title="' . esc_attr__( 'Add Media' ) . '" onclick="return false;">' . sprintf( $context, $img ) . '</a>';
 }