Bugfix: Web folder protection did not work on web deletion

Bugfix: $app->system->unlink function had wrong parameter name, no files were deleted ever

server/lib/classes/system.inc.php

@@ -699,7 +699,7 @@ class system{
 		}
 	}
 	
-	function unlink($file) {
+	function unlink($filename) {
 		if(file_exists($filename)) {
 			return unlink($filename);
 		}

server/plugins-available/apache2_plugin.inc.php

@@ -1452,7 +1452,7 @@ class apache2_plugin {
 		$app->uses('system');
 		$web_config = $app->getconf->get_server_config($conf['server_id'], 'web');
 		
-		$app->system->web_folder_protection($data['new']['document_root'],false);
+		$app->system->web_folder_protection($data['old']['document_root'],false);
 
 		//* Check if this is a chrooted setup
 		if($web_config['website_basedir'] != '' && @is_file($web_config['website_basedir'].'/etc/passwd')) {