UI Refresh: a new app info header for app/notification.

- moved force stop and uninstall button to bottom of page (as footer)
- Forked appheader layout file, and created AppHeaderController to
  contain all binding logic for header.

Bug: 32442716
Test: RunSettingsRoboTests
Change-Id: Id4eb365ca25e035c043c068867f5cbc3a202b201

src/com/android/settings/dashboard/DashboardFeatureProviderImpl.java

@@ -38,8 +38,8 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
     private final CategoryManager mCategoryManager;
 
     public DashboardFeatureProviderImpl(Context context) {
-        mContext = context;
-        mCategoryManager = CategoryManager.get(context);
+        mContext = context.getApplicationContext();
+        mCategoryManager = CategoryManager.get(mContext);
     }
 
     @Override