Added the multiple winners use case.
Added verifications for the list of decisions returned.
Added tests for the decision list verifications.
Renamed subjectId for voteId.
Removed unecessary methods and inheritence.
Started implementing VoteDAO with h2 in memory testing.
Added an abstract class for fixtures. Renamed accessor in Vote. Implemented create method for VoteDAO. Removed the created_date and finish_date fields for the vote entity and table.