Fixes 336b7abe which changed the label from
'Login' to a single-use 'Log in' whilste the translations only have 'Login'.

* locales/de: Fix several wording, typo and grammar mistakes

* Fix typo

Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

An issue in the code prevented the SameSite session cookie option from being set the first time we were reaching SSP when using PHP versions older than 7.3.

This fixes #1320

* fixed warning when Warning: session_create_id(): Failed to create new ID in /var/ssosp/lib/SimpleSAML/SessionHandlerPHP.php

* Use session_create_id() unconditionally

In master, we require PHP 7.2, which is guaranteed to provide `session_create_id()`. Therefore, we don't need the if clause any longer. Add also a warning when `session_create_id()` fails, and fall back gracefully to our old way to create session IDs.

Co-authored-by: Jaime Pérez Crespo <jaime.perez@uninett.no>

Fix several bugs in saml:NameIDAttribute authproc filter & raise coverage