Move system updater to main settings

        <activity android:name="Settings$SystemUpdaterActivity"

            android:label="@string/system_update_settings_list_item_title"

            android:parentActivityName="Settings"

            android:icon="@drawable/ic_system_update">

            <intent-filter android:priority="1">

                <action android:name="android.settings.SYSTEM_UPDATE_SETTINGS" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>

            <intent-filter>

                <action android:name="com.android.settings.action.SETTINGS" />

            </intent-filter>

    /*

    * Settings subclasses for launching independently.

    */

    public static class SystemUpdaterActivity extends SettingsActivity { /* empty */ }

    public static class AssistGestureSettingsActivity extends SettingsActivity { /* empty */}

    public static class BluetoothSettingsActivity extends SettingsActivity { /* empty */ }

    public static class SimSettingsActivity extends SettingsActivity { /* empty */ }

    public static class AdvancedConnectedDeviceActivity extends SettingsActivity { /* empty */ }

    // Top level categories for new IA

    public static class SystemUpdaterActivity extends SettingsActivity { /* empty */ }

    public static class NetworkDashboardActivity extends SettingsActivity {}

    public static class ConnectedDeviceDashboardActivity extends SettingsActivity {}

    public static class PowerUsageSummaryActivity extends SettingsActivity { /* empty */ }