[edit_accounts] Admin pode editar sua própria conta

Signed off by: Jackson Souza <jacksonjsouza@gmail.com>
[edit_accounts] Fazendo testes do cucumber de show e edit do admin

Signed off by: Lucas Takeshi <lucastakeshipalma@gmail.com>
[edit_accounts] Fazendo testes de rspec para o show, edit e update do admin

Signed off by: Jackson Souza <jacksonjsouza@gmail.com>