Various tweaks to launcher

- Removing hotdog for shadow bg protection
- Adding bg protection for customization tray
- Restoring holographic outlines for all apps
- Small bug fixes

Change-Id: I58d81bb490f78c76fcaf46122febc3c1aace854e
diff --git a/res/layout-xlarge-land/launcher.xml b/res/layout-xlarge-land/launcher.xml
index 7b66d7c..e421e07 100644
--- a/res/layout-xlarge-land/launcher.xml
+++ b/res/layout-xlarge-land/launcher.xml
@@ -161,7 +161,7 @@
     </RelativeLayout>
 
     <TabHost
-        android:id="@android:id/tabhost"
+        android:id="@+id/customization_drawer"
         android:layout_width="match_parent"
         android:layout_height="480dp"
         android:layout_gravity="bottom">