private async void OnRegistrationCancelled(object sender, EventArgs e)
{
await RegistrationView.FadeTo(0, 100, Easing.CubicIn);
CredentialsView.TranslateTo(0, 0, 150, Easing.CubicInOut);
}
private async void OnRegisterTapped(object sender, EventArgs e)
{
await CredentialsView.TranslateTo(Width, 0, 150, Easing.CubicInOut);
RegistrationView.FadeTo(1, 200, Easing.CubicIn);
}