Added login request

backend/wordpress/wp-admin/network/plugin-install.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Install plugin network administration panel.
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 3.1.0
+ */
+
+if ( isset( $_GET['tab'] ) && ( 'plugin-information' == $_GET['tab'] ) )
+	define( 'IFRAME_REQUEST', true );
+
+/** Load WordPress Administration Bootstrap */
+require_once( dirname( __FILE__ ) . '/admin.php' );
+
+require( ABSPATH . 'wp-admin/plugin-install.php' );