File list (Check if you may need any files):
.htaccess
app
...\.htaccess
...\cache
...\.....\.htaccess
...\.....\index.html
...\config
...\......\autoload.php
...\......\config.php
...\......\constants.php
...\......\database.php
...\......\doctypes.php
...\......\foreign_chars.php
...\......\form_validation.php
...\......\hooks.php
...\......\index.html
...\......\index_page.php
...\......\mailset.php
...\......\migration.php
...\......\mimes.php
...\......\myconfig.php
...\......\pagination.php
...\......\profiler.php
...\......\qiniu.php
...\......\routes.php
...\......\sample_ database.php
...\......\smileys.php
...\......\topicset.php
...\......\userset.php
...\......\user_agents.php
...\......\version.php
...\controllers
...\...........\admin
...\...........\.....\db_admin.php
...\...........\.....\links.php
...\...........\.....\login.php
...\...........\.....\nodes.php
...\...........\.....\page.php
...\...........\.....\site_settings.php
...\...........\.....\topics.php
...\...........\.....\users.php
...\...........\captcha_code.php
...\...........\comment.php
...\...........\favorites.php
...\...........\feed.php
...\...........\follow.php
...\...........\home.php
...\...........\index.html
...\...........\install.php
...\...........\message.php
...\...........\node.php
...\...........\notifications.php
...\...........\page.php
...\...........\search.php
...\...........\settings.php
...\...........\tag.php
...\...........\topic.php
...\...........\upload.php
...\...........\user.php
...\core
...\....\index.html
...\....\MY_Config.php
...\....\MY_Controller.php
...\....\MY_Loader.php
...\....\MY_Model.php
...\....\MY_Router.php
...\....\MY_URI.php
...\errors
...\......\error_404.php
...\......\error_db.php
...\......\error_general.php
...\......\error_php.php
...\......\index.html
...\......\show_message.php
...\helpers
...\.......\br2nl_helper.php
...\.......\format_content_helper.php
...\.......\function_helper.php
...\.......\index.html
...\.......\remove_xss_helper.php
...\hooks
...\.....\index.html
...\index.html
...\language
...\........\en
...\........\..\default_lang.php
...\........\..\index.html
...\........\zh_cn
...\........\.....\custom_lang.php
...\........\.....\default_lang.php
...\........\.....\form_validation_lang.php
...\........\.....\index.html
...\libraries
...\.........\Auth.php
...\.........\AvatarResize.php
...\.........\Captcha.php
...\.........\index.html
...\.........\Myclass.php
...\.........\qiniu
...\.........\.....\auth_digest.php