That way we can search through all logs in constant time instead of having to perform a full table scan.

[Dave Cridland] try to encode username, realm and password in iso-8859-1 when doing DIGEST-MD5 before computing the hash. Fixes #5512

msgfmt -c de.po complains about two errors though. They result from the fuzzy
clock. The complained arguments refer to the next hour and are resolved by
Gajim.

This is a workaround until the whole update_contact method is gone. It should not be needed.