Fixing drop target area, and adding bg color indicators.

- Merging wallpaper fix and PagedViewIconCache key fix

Change-Id: I2a65bc4b642f020dfc4d2223a36d3ebcf41de5f5
diff --git a/res/values/config.xml b/res/values/config.xml
index 394ff8a..06e8fda 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -43,6 +43,9 @@
     <integer name="config_allAppsBatchSize">0</integer>
 
 <!-- Workspace -->
+    <!-- The transition duration for the background of the drop targets -->
+    <integer name="config_dropTargetBgTransitionDuration">100</integer>
+
     <integer name="config_crosshairsFadeInTime">600</integer>
 
     <!--  When dragging an item on the workspace, how much bigger (in pixels) the dragged view