Move DocumentsUI settings into overflow menu.

Also use different strings based on device type to make clearer.

Bug: 13437894
Change-Id: I4053780de2c7197fb45cc53aee7659e9d0d75c0a
diff --git a/src/com/android/documentsui/DirectoryFragment.java b/src/com/android/documentsui/DirectoryFragment.java
index 0a7eedc..caa07ab 100644
--- a/src/com/android/documentsui/DirectoryFragment.java
+++ b/src/com/android/documentsui/DirectoryFragment.java
@@ -351,6 +351,10 @@
         updateDisplayState();
     }
 
+    public void onDisplayStateChanged() {
+        updateDisplayState();
+    }
+
     public void onUserSortOrderChanged() {
         // Sort order change always triggers reload; we'll trigger state change
         // on the flip side.