[release] update to current snapshot versions
[test] verify bug BT-36
Merge pull request #99 from dacrome/BT-36

[test] verify bug BT-36
[enhancement] update tests for BT-36 

the search with not and extensions should work, but actually not,
because of the hibernate bug
https://hibernate.atlassian.net/browse/HHH-8914
Merge pull request #100 from dacrome/BT-36

[enhancement] update tests for BT-36
[task] reset to upstream develop
[task] adapted tests to fit new behavior of update extension
[fix] added tests that have been lost during rebase
Merge pull request #101 from davidmoebius/cleanup

[cleanup] adding header and clean up comments
Merge pull request #102 from davidmoebius/OSNG-331

[task] adapted tests to fit new behavior of update extension
[task] changed old tests to UpdateUser and added some new tests
Merge pull request #103 from davidmoebius/OSNG-342

[task] changed old tests to UpdateUser and added some new tests
[task] updated test for extension update
Merge pull request #104 from davidmoebius/OSNG-317

[task] updated test for extension update
[task] added new test to delete and add same email
[task] reset import to new UpdateUser/Group
Merge pull request #105 from davidmoebius/email_delete_add

[task] added new test to delete and add same email
Merge pull request #106 from davidmoebius/OSNG-342

[task] reset import to new UpdateUser/Group
[task] deletion of testclass because tested method doesn't exist anymore
Merge pull request #107 from davidmoebius/delete_update_user_method

[task] deletion of testclass because tested method doesn't exist anymore