Creation of InMemoryExpenseTypeRepository and HibernateExpenseTypeRepository;
Trnsformation from class to interface of ExpenseTypeRepository;
Merge branch 'master' of https://github.com/ajorgesantosp/EAPLI_PL_2DA.git
Merge branch 'master' of https://github.com/ajorgesantosp/EAPLI_PL_2DA.git