Merge pull request #868 from matthiasseidemann/master

Upgraded relevant parts to pax-wicket 3.0.1
[OPENENGSB-3672] added support for multiple values per key to EDBQueries
Merge pull request #869 from mipe/master

[OPENENGSB-3672] added support for multiple values per key to EDBQueries
[OPENENGSB-3675] moved fasterxml.jackson version to root
Merge pull request #870 from mipe/master

[OPENENGSB-3675] fixed fasterxml.jackson version
fixed checkstyle errors
fixed failing EDB integration test
[OPENENGSB-3701] Create a user/projects domain