#39 - Model change - new class: CourtCase

Changes related to the #39 task.
The reasoning behind it was: the findRelatedJudgment is responsible for finding related judgment and is not aware if it should break the processing or not. That's why it returns sth if it finds it or null if it cannot.

But because it's a private method, then maybe you're right. Decide, should I change it?
BTW: this method will disappear soon because we're going to remove the merging functionality in import :-)