Move ManageAccountsSettings into Settings.

- Add activity-alias for the Activity.
- Copy the Activity from AccountsAndSyncSettings.
- Fragmentize ManageAccountsSettings.
- Remove dependency toward AccountPreferenceBase, which is
  used in AccountsAndSyncSettings widely.
- Add missing implementation derived from AccountPrefernceBase.
- Copy dependent drawables.
- Copy dependent xmls
- Copy AccountPrefernce.java.
- Copy strings, adding CHAR LIMIT.
- Remove the logic which remove the preference when its destination
  Activity is missing. We already have the destination as
  Fragment, and it never disappear.

Change-Id: Id41c63d7064aebeaae31bcd84bf4fd20a5636dfe

res/xml/manage_accounts_settings.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 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.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <PreferenceCategory
+            android:title="@string/header_general_sync_settings" />
+
+    <CheckBoxPreference android:key="backgroundDataCheckBox"
+        android:persistent="false"
+        android:title="@string/background_data"
+        android:summary="@string/background_data_summary"/>
+
+    <CheckBoxPreference android:key="syncAutomaticallyCheckBox"
+        android:persistent="false"
+        android:dependency="backgroundDataCheckBox"
+        android:title="@string/sync_automatically"
+        android:summary="@string/sync_automatically_summary"/>
+
+    <PreferenceCategory android:key="manageAccountsCategory"
+            android:title="@string/header_manage_accounts" />
+
+</PreferenceScreen>

res/xml/settings.xml

@@ -93,10 +93,10 @@
              preference. -->
 
         <com.android.settings.IconPreferenceScreen
+            android:fragment="com.android.settings.ManageAccountsSettings"
             settings:icon="@drawable/ic_settings_sync"
             android:title="@string/sync_settings"
             android:key="sync_settings">
-            <intent android:action="android.settings.SYNC_SETTINGS" />
         </com.android.settings.IconPreferenceScreen>
 
         <!-- Privacy -->