Use UserManager instead of PackageManager for user management

Show Accounts in secondary settings
Move Users & restrictions to Device section

Change-Id: Idcd7ed44801fe92c847cff81d11f3d6f6d06ba81

src/com/android/settings/Settings.java

@@ -96,12 +96,17 @@ public class Settings extends PreferenceActivity
 
     // Show only these settings for restricted users
     private int[] SETTINGS_FOR_RESTRICTED = {
+            R.id.wireless_section,
             R.id.wifi_settings,
             R.id.bluetooth_settings,
+            R.id.device_section,
             R.id.sound_settings,
             R.id.display_settings,
+            R.id.personal_section,
             R.id.security_settings,
             R.id.account_settings,
+            R.id.account_add,
+            R.id.system_section,
             R.id.about_settings
     };