Fix tests related to en_us -> en change

Signed-off-by: Fernando Rocha <fernandogrd@gmail.com>
Fix tutorials.json fixtures and name_pt_br related tests

Signed-off-by: Fernando Rocha <fernandogrd@gmail.com>
Fix testes related to en_us -> en change

All backend tests passing

Signed-off-by: Fernando Rocha <fernandogrd@gmail.com>