Button that goes from app info details to app info

This info button is shown on the header of all app detail pages.
This button is hidden when coming from app info, to avoid allowing
users to go in circles.

Since app notification details had a settings button where the new
info button goes, the app notification settings will move down to
be a preference (this matches the usage access screen UX).

Also fix a bug in launching app notification settings for managed
profiles.

Bug: 20633669
Change-Id: Idbb4f7c3326b4c6b0a19559b722ee0406eaba6c0

res/drawable/ic_info.xml

@@ -0,0 +1,24 @@
+<!--
+    Copyright (C) 2015 The Android Open Source Project
+
+    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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M11.0,17.0l2.0,0.0l0.0,-6.0l-2.0,0.0l0.0,6.0zm1.0,-15.0C6.48,2.0 2.0,6.48 2.0,12.0s4.48,10.0 10.0,10.0 10.0,-4.48 10.0,-10.0S17.52,2.0 12.0,2.0zm0.0,18.0c-4.41,0.0 -8.0,-3.59 -8.0,-8.0s3.59,-8.0 8.0,-8.0 8.0,3.59 8.0,8.0 -3.59,8.0 -8.0,8.0zM11.0,9.0l2.0,0.0L13.0,7.0l-2.0,0.0l0.0,2.0z"/>
+</vector>