Plugin install and thickbox for the network admin. props ocean90, fixes #15510, fixes #15750.

git-svn-id: http://svn.automattic.com/wordpress/trunk@16963 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/network/index.php

@@ -35,7 +35,9 @@ add_contextual_help($current_screen,
 wp_dashboard_setup();
 
 wp_enqueue_script( 'dashboard' );
+wp_enqueue_script( 'plugin-install' );
 wp_admin_css( 'dashboard' );
+wp_admin_css( 'plugin-install' );
 add_thickbox();
 
 add_screen_option('layout_columns', array('max' => 4, 'default' => 2) );