Validate: 
1)Improved Skip call ban & Back call ban: Now they work on
hierarchicalLevel of the layers (they did not, which resulted in false
positives). Logic improved.
2) Performance improved by building up a DependencyHashMap in
ConfigurationServiceImplementation. Back call ban and Not allowed to use
make use of this hashmap now, resulting with tremendous performance
improvement. Drawback: inner classes are (again) not reported. Solution
of this problem in next commit.