Adding initial folder animation

-Changed CellLayout/CellLayoutChildren to use padding in the more
 standard way

Change-Id: I728f1b699232422be76eb29b4cf710cd5723a0aa
diff --git a/res/values/config.xml b/res/values/config.xml
index ec01fa8..ba9034f 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -24,6 +24,9 @@
 
     <integer name="config_dropAnimMaxDuration">400</integer>
 
+    <!-- The duration of the UserFolder opening and closing animation -->
+    <integer name="config_folderAnimDuration">150</integer>
+
     <!-- The distance at which the animation should take the max duration -->
     <integer name="config_dropAnimMaxDist">800</integer>