v2.0.2: Download folders based on thread subjects

- Fixed download code that didn't get carried over from Version 2.0 that
was associated with private browsing mode
- Cleaned up the options dialog, making it a bit more readable
- Replaced 4chanarchive.org with chanarchive.org
- Added the ability to automatically create a folder in your save path
based on the subject of the thread and use it for files, You can
manually type in a custom folder name if you so wish
- Added default option for checkbox that enables the folder based on the
subject