User management UI: take 2

Single screen user management, also visible on secondary users.
Work in progress, especially with respect to synchronizing with
the Me profile.

Change-Id: Id6e94a85d53356847e4e019c52e3388de9ecb354

src/com/android/settings/Settings.java

@@ -107,14 +107,13 @@ public class Settings extends PreferenceActivity
             R.id.application_settings,
             R.id.personal_section,
             R.id.security_settings,
+            R.id.user_settings,
             R.id.account_settings,
             R.id.account_add,
             R.id.system_section,
             R.id.about_settings
     };
 
-    private boolean mEnableUserManagement = false;
-
     // TODO: Update Call Settings based on airplane mode state.
 
     protected HashMap<Integer, Integer> mHeaderIndexMap = new HashMap<Integer, Integer>();
@@ -129,11 +128,6 @@ public class Settings extends PreferenceActivity
             getWindow().setUiOptions(0);
         }
 
-        if (android.provider.Settings.Secure.getInt(getContentResolver(), "multiuser_enabled", -1)
-                > 0) {
-            mEnableUserManagement = true;
-        }
-
         mAuthenticatorHelper = new AuthenticatorHelper();
         mAuthenticatorHelper.updateAuthDescriptions(this);
         mAuthenticatorHelper.onAccountsUpdated(this, null);
@@ -418,8 +412,7 @@ public class Settings extends PreferenceActivity
                 int headerIndex = i + 1;
                 i = insertAccountsHeaders(target, headerIndex);
             } else if (id == R.id.user_settings) {
-                if (!mEnableUserManagement
-                        || !UserHandle.MU_ENABLED || UserHandle.myUserId() != 0
+                if (!UserHandle.MU_ENABLED
                         || !getResources().getBoolean(R.bool.enable_user_management)
                         || Utils.isMonkeyRunning()) {
                     target.remove(header);