unit tests

[Helias]

check in all JSON for all years these logics:

• [ ] if quorum false -> %votanti < 15
• [ ] if quorum true -> %votanti > 15
• [ ] votanti / numero seggi -> voti per seggio
• [ ] every year should have the same CdL name (same for departments)
• [ ] a list should have at least numero eletti = voti totali / voti per seggio (when candidates >= eletti)
• [ ] a list should have at least >= sum of the candidates votes