The password manager uses strong encryption using a key derived from the passphrase using
scrypt key strengthening algorithm. This ensures encryption is performed using a strong key
and that brute forcing the passphrase is time consuming.
If the user loses his passphrase no recovery is possible.
Password is no longer saved with the connection list.
Password is not entered along with other connection credentials.
Password is now asked for when required.
Still working on saving the password and auto retrieving it from the password manager.
This greatly reduces the amount of encryption related code required. Thought
we still have todo our own key strenthening but this also is easier with Botan::PasswordHash.
