Apps tabs align to title on 2-pane settings.

Pad the lists in Apps screen.
Pad the color bar to align with the list.

Bug: 6449489

Change-Id: I28c39e2aae04a1fe36c6b7dc447ae19da575edaf

res/layout-sw720dp/tab_widget.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:scrollbars="none"
+    android:fillViewport="true">
+
+    <TabWidget
+        android:id="@android:id/tabs"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:paddingLeft="@*android:dimen/preference_fragment_padding_side"
+        android:paddingRight="@*android:dimen/preference_fragment_padding_side"
+        style="?android:attr/tabWidgetStyle" />
+
+</HorizontalScrollView>