atualizar
Merge remote-tracking branch 'origin/master'

Conflicts:
	application/controllers/instrutores.php
	application/models/instrutor_model.php
	application/views/instrutores/index.php
	assets/css/unicorn.main.css
Melhorias no login
melhorias no login
Merge remote-tracking branch 'origin/master' into Humberto