Clean up manifest issues

        <activity android:name=".nfc.HowItWorks"

                  android:label="@string/nfc_payment_settings_title"

                  android:excludeFromRecents="true"

                  android:parentActivityName="Settings$PaymentSettingsActivity">

                  android:excludeFromRecents="true">

        </activity>

        <activity android:name=".SmsDefaultDialog"