Add a lang_update.php script to auto-update language files

chat.php

@@ -3754,7 +3754,7 @@ function load_config(){
 		define('MEMCACHEDHOST', 'localhost'); // Memcached host
 		define('MEMCACHEDPORT', '11211'); // Memcached port
 	}
-	define('DBDRIVER', 2); // Selects the database driver to use - 0=MySQL, 1=PostgreSQL, 2=sqlite
+	define('DBDRIVER', 0); // Selects the database driver to use - 0=MySQL, 1=PostgreSQL, 2=sqlite
 	if(DBDRIVER===2){
 		define('SQLITEDBFILE', 'public_chat.sqlite'); // Filepath of the sqlite database, if sqlite is used - make sure it is writable for the webserver user
 	}