Fix bug #13322417 stability-sys: Java crash in com.android.settings:
...java.lang.NullPointerException: Attempt to read from field
... 'long com.android.settings.SettingsActivity$Header.id' on a null object reference

- fix the AndroidManifest for missing meta data
- fix NPE causes in getHeaderTitle()
- update how we are putting Fragments on the BackStack

Change-Id: Ifc0bba744c3b2a0603c2f11f711ef493cbacc9d2
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ff90474..cc1208e 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1536,6 +1536,10 @@
                 <action android:name="android.settings.SYNC_SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.accounts.AccountSyncSettings" />
+            <meta-data android:name="com.android.settings.TOP_LEVEL_HEADER_ID"
+                       android:resource="@id/account_settings" />
         </activity>
 
         <activity android:name="com.android.settings.accounts.AddAccountSettings"