Merge pull request #55 from kuninory/master

fixes infufg/sade#50
Merge pull request #56 from kuninory/master

fixes infufg/sade#50
Merge pull request #57 from kuninory/master

Corrigido os modelos ER
fixes infufg/SADE#19
Merge branch 'master' of https://github.com/infufg/SADE
Merge pull request #58 from luizhenriquees/master

fixes infufg/SADE#19