fix bug with alpha level of items on workspace

- fixed bug where side pages on workspace were visible on orientation changes
- fixed bug where dragging an item to a new page would cause it to be invisible initially
diff --git a/src/com/android/launcher2/CellLayout.java b/src/com/android/launcher2/CellLayout.java
index fd389ca..73e0c8f 100644
--- a/src/com/android/launcher2/CellLayout.java
+++ b/src/com/android/launcher2/CellLayout.java
@@ -625,6 +625,7 @@
             child.setId(childId);
 
             addView(child, index, lp);
+            child.setAlpha(getAlpha());
             if (child instanceof VisibilityChangedBroadcaster) {
                 VisibilityChangedBroadcaster v = (VisibilityChangedBroadcaster) child;
                 v.setVisibilityChangedListener(this);