add layout files for ringtone picker

<LinearLayout

  xmlns:android="http://schemas.android.com/apk/res/android"

  android:orientation="vertical"

  android:layout_width="fill_parent"

  android:layout_height="fill_parent">

  <com.tmobile.widget.HeaderTwinButton

      android:layout_width="fill_parent"

      android:layout_height="wrap_content"

      android:id="@+id/save_cancel_header"

      android:headerText="@string/ringtone_header"

      android:buttonText="@string/ringtone_button_done"

      android:button2Text="@string/ringtone_button_cancel" />

   <com.tmobile.widget.HeaderIcon

     android:layout_width="fill_parent"

     android:layout_height="wrap_content"

     android:headerText="@string/ringtone_header" />

   <ListView

    android:layout_width="fill_parent"

    android:layout_height="0px"

    android:layout_weight="1"

    android:id="@+id/list" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<com.tmobile.widget.ListItemTwinIconLabelText xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    />