MammoViewer: Last sonography study should be shown, not previous exam

Case 05794005:

The sonography of the previous exams are loaded automatically instead of the mamma sonography of the last exam (always the same date as the mamographic previous exam).

It would be good if the last sonography was loaded automatically and not the one of the next-to-last previous exam.

This setting is not configurable, therefore this change request.