Fix replay check for 2FA

Don't update last_login during authentication

Signed-off-by: Shitiz Garg <mail@dragooon.net>
Improve partial SSL accross the forum

Fixes #2555

Signed-off-by: Shitiz Garg <mail@dragooon.net>
Merge pull request #2577 from Dragooon/release-2.1

Minor 2FA and SSL improvements