Merge "Add placeholder summary to stablize app info pref height" into oc-dev

    <Preference

        android:key="permission_settings"

        android:title="@string/permissions_label"

        android:summary="@string/summary_placeholder"

        android:selectable="true"/>

    <Preference

        android:key="storage_settings"

        android:title="@string/storage_settings"

        android:summary="@string/summary_placeholder"

        android:selectable="true"/>

    <Preference

        android:key="data_settings"

        android:title="@string/data_usage_summary_title"

        android:summary="@string/summary_placeholder"

        android:selectable="true"/>

    <Preference

        android:key="battery"

        android:title="@string/power_usage_summary_title"

        android:summary="@string/summary_placeholder"

        android:selectable="true"/>

    <Preference

        android:key="preferred_settings"

        android:title="@string/launch_by_default"

        android:summary="@string/summary_placeholder"

        android:selectable="true"/>

    <Preference

        android:key="memory"

        android:title="@string/memory_settings_title"

        android:summary="@string/summary_placeholder"

        android:enabled="false"

        android:selectable="true"/>