Language Packs: Many many fixes such as:

- Add a "Update Translations" stand-alone button to the updates page
- Shift Language feedback to before update process completion action links & limit the verbosity of output (name + success/errors)
- Simplify/combine the language update descriptive string to only include a plugin/theme name
- Properly handle cache clearing after language updates to prevent langs being repeditively updated
- Display a "All items up to date" string when there's nothing to do
- Reduce the 'Connection Information' from a <h2> to a <h3> to remove duplicate h2's and screen icons from update screens
- Fix the Direct filesystem method not being used for Language updates because WP_LANG_DIR doesn't exist (check it's parent for writable instead)
See #18200, #22704


Built from https://develop.svn.wordpress.org/trunk@25806


git-svn-id: http://core.svn.wordpress.org/trunk@25718 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/file.php

@@ -891,6 +891,11 @@ function get_filesystem_method($args = array(), $context = false) {
 	if ( ! $method && function_exists('getmyuid') && function_exists('fileowner') ){
 		if ( !$context )
 			$context = WP_CONTENT_DIR;
+
+		// If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it.
+		if ( WP_LANG_DIR == $context && ! is_dir( $context ) )
+			$context = dirname( $context );
+
 		$context = trailingslashit($context);
 		$temp_file_name = $context . 'temp-write-test-' . time();
 		$temp_handle = @fopen($temp_file_name, 'w');
@@ -1021,9 +1026,8 @@ jQuery(function($){
 -->
 </script>
 <form action="<?php echo esc_url( $form_post ) ?>" method="post">
-<div class="wrap">
-<?php screen_icon(); ?>
-<h2><?php _e('Connection Information') ?></h2>
+<div>
+<h3><?php _e('Connection Information') ?></h3>
 <p><?php
 	$label_user = __('Username');
 	$label_pass = __('Password');