This patch allow the use of the Feebee Hardware Usb Authentication Key.
The hardware authentication is enabled only if a file "feebees.conf" is detected next to index.php.
The hardware authentication is enabled only for auth_type = cookie yet.
Changes are very minimal in the existing code (only cookie.auth.lib.php is affected), all the specific code has been centralized
in the libraries/auth/feebee directory.
The Feebee authentication key is not commercialized yet but I can send free samples if required for testing.
3 users strings exist but are not localized yet.