Rewrite QS customizer

Instead of custom draginess, use RecyclerView with a GridLayoutManager.

Still needs a bit of work, but the overall feel is significantly better
than before.

Change-Id: I3b3927472f69721e265ef7591de2f3052862f392
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/DataSaverTile.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/DataSaverTile.java
index 1aeb0fe..c6a98b4 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/DataSaverTile.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/DataSaverTile.java
@@ -30,7 +30,7 @@
     }
 
     @Override
-    protected BooleanState newTileState() {
+    public BooleanState newTileState() {
         return new BooleanState();
     }