UI refresh on bluetooth list page

- xml layout clean up
- add "Device name" preference, tapping will bring up rename dialog
- Remove tap target from original device_name pref

Change-Id: I6e9764dbb6c51f94be6d6a61d5a6401141407409
Bug: 62890841
Bug: 62891178
Test: robotests

src/com/android/settings/bluetooth/BluetoothPairingDetail.java

@@ -186,7 +186,7 @@ public class BluetoothPairingDetail extends DeviceListPreferenceFragment impleme
     protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
         List<AbstractPreferenceController> controllers = new ArrayList<>();
         mDeviceNamePrefController = new BluetoothDeviceNamePreferenceController(context,
-                this, getLifecycle());
+                getLifecycle());
         controllers.add(mDeviceNamePrefController);
 
         return controllers;