Add Sign in all views

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Traslate in view login 'Sign in' to 'Entrar'

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Change index of aplication

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>