Multilingual CodeIgniter system including accounts, users, themes, bootstrap and AJAX

I think you have made a great job. I think if you can add multi-theme and multi-site support to your job it will be very good I think.

I have now added a very simple theme structure which can be expanded. I'm not too sure on the multi-site support as it will depened on how the system is to be used. You can always install the system in a sub-directory and change the .htaccess with "RewriteBase /your-sub-dir/".

Please let me know your thoughts.