[OPENENGSB-3669] make QueryRequest object specially aware of given contextIds
[OPENENGSB-3666] Added read/write lock mechanism to the graph db using class to avoid sporadicly occuring concurrent modification exceptions
Merge pull request #861 from Arcticwolf/OPENENGSB-3669

[OPENENGSB-3669] make QueryRequest object specially aware of given contextIds
Merge pull request #862 from Arcticwolf/OPENENGSB-3666

[OPENENGSB-3666] Added read/write lock mechanism to the graph db class
[OPENENGSB-3670] fixed the problem with the wrong configuration in the integration tests
Merge pull request #864 from Arcticwolf/OPENENGSB-3670

[OPENENGSB-3670] fixed the problem with the wrong configuration in the integration tests