added test to test if login with two different users works
[enhancement] added test for proofing fix for BT-32
[test] adjusted test because of fix for BT-32
[release] updated versions before server release
[test] verify BT-33
[fix] removed residues of unneeded group in seed
[before-release] updated osiam dependencies to latest release
[test] add test for empty date string workaround
[release] updated version for maintenance