Major: - move SetupWizard-related codes to WifiSettingsForSetupWizardXL as much as possible - stop using Preference for configurinig wifi network. We use WifiConfigUiForSetupWizardXL instead, which is base on a bare View. Minor: - change button handling code expecting better readability. - hide Detail button. - modify strings a bit. - add logs Bug: 3175016 Change-Id: I5b29917af73aac6a82e13ba846a9d5085f9bd523