Implement proper column show/hide behaviour based on screen options for the Network Admin Sites table column added for the wpmublogsaction hook.

git-svn-id: http://svn.automattic.com/wordpress/trunk@16546 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-ms-sites-list-table.php

@@ -310,9 +310,9 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 					break;
 
 				case 'plugins': ?>
-						<?php if ( has_filter( 'wpmublogsaction' ) ) { ?>
-						<td valign="top">
-							<?php do_action( 'wpmublogsaction', $blog['blog_id'] ); ?>
+						<?php if ( has_filter( 'wpmublogsaction' ) ) {
+						echo "<td valign='top'class='$column_name column-$column_name'$style>";
+							do_action( 'wpmublogsaction', $blog['blog_id'] ); ?>
 						</td>
 						<?php } ?>
 					<?php break;