[Crud course] Criando o modelo da disciplina

Signed off by: Lucas Takeshi <lucastakeshipalma@gmail.com>
Signed off by: Andre Pestana <andre.pest92@gmail.com>
[Crud course] Cadastrando a disciplina como superprofessor

Signed off by: Lucas Takeshi <lucastakeshipalma@gmail.com>
Signed off by: Andre Pestana <andre.pest92@gmail.com>