Added AppInfoDropTargetBar to spring loaded workspace.

Change-Id: Ieedc68eba9a5934ab30d6d546d8a837274491064
diff --git a/src/com/android/launcher3/InfoDropTarget.java b/src/com/android/launcher3/InfoDropTarget.java
index b4a1445..f5b7c56 100644
--- a/src/com/android/launcher3/InfoDropTarget.java
+++ b/src/com/android/launcher3/InfoDropTarget.java
@@ -59,7 +59,8 @@
     }
 
     public static boolean supportsDrop(Context context, ItemInfo info) {
-        return info instanceof AppInfo || info instanceof PendingAddItemInfo;
+        return info instanceof AppInfo || info instanceof ShortcutInfo
+                || info instanceof PendingAddItemInfo;
     }
 
     @Override