issue #12(nome do branch está errado, 22) agora tambem cria phase_completion quando salva qualquer phase duration
Merge branch 'feature/22_adding_phase_completion_for_notifications' of github.com:gems-uff/sapos into feature/22_adding_phase_completion_for_notifications
Merge branch 'feature/22_adding_phase_completion_for_notifications' of github.com:gems-uff/sapos into feature/22_adding_phase_completion_for_notifications
issue #12 (o 22 no branch está errado), criando migration para gerar todas as phase_completions de cada enrollment