LL:NG::Handler::AuthBasic fails to manage persistent connections
LL::NG::Handler::Simple and LL::NG::Handler::AuthBasic try to check if current user is the same as previous request's user - in that case, it is useless to retrieve session in local cache or in session backend, since it is still in memory.
But LL::NG::Handler::AuthBasic fails that check, since it compares $id and $datas->{_session_id}, but $id is computed from user:password, not from session_id.
To manage the check, we have to store that $id in session data in local cache.