Fixing calculation of # of rows in All Apps

(issue was esp. apparently on 1024x768 devices)
diff --git a/src/com/android/launcher2/AllAppsPagedView.java b/src/com/android/launcher2/AllAppsPagedView.java
index fd5979f..36ff8e1 100644
--- a/src/com/android/launcher2/AllAppsPagedView.java
+++ b/src/com/android/launcher2/AllAppsPagedView.java
@@ -174,7 +174,9 @@
 
         availableHeight -= mPageLayoutPaddingTop + mPageLayoutPaddingBottom;
         availableHeight -= cellHeight; // Assume at least one row
-        availableHeight -= screenHeight * 0.16f;
+        Resources r = getContext().getResources();
+        float scaleFactor = r.getInteger(R.integer.config_allAppsZoomScaleFactor) / 100f;
+        availableHeight -= screenHeight * scaleFactor;
         if (availableHeight > 0) {
             return Math.min(mMaxCellCountY,
                     1 + availableHeight / (cellHeight + mPageLayoutHeightGap));