DarkThumbs V1.5.1 - Fix installer, archive marker

Fixes a problem with the installer whereby DarkThumbs ... wouldn't work!

Also restores the "Show archive icon" and corrects the version value.

Reminder: .mobi support is not included in the 32-bit version.
Reminder: to upgrade DarkThumbs, you must first uninstall the existing version via "Add / Remove Programs".

If you find DarkThumbs useful, please consider buying me a coffee!

Special thanks to @vivadavid and @dudelstein for trying V1.5 and pointing out my bugs!