Slim recents [2/3]

@SKULSHADY: Cleanup, fixes and adapt for SettingsPreferenceFragment
@rohanpurohit: bringup to 10

Change-Id: I7fa5703534c9eb76a555db9a6d3349cc2b6a2b2d
Signed-off-by: rohan <purohit.rohan@gmail.com>

res/xml/slim_recent_app_sidebar.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/**
+ * Copyright (C) 2017 AICP
+ *
+ * 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"
+    android:title="@string/recent_app_sidebar_picker_title">
+
+</PreferenceScreen>