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/res/menu/activity.xml b/res/menu/activity.xml
index d995376..b9b8054 100644
--- a/res/menu/activity.xml
+++ b/res/menu/activity.xml
@@ -55,8 +55,9 @@
         android:icon="@drawable/ic_menu_view_list"
         android:showAsAction="never" />
     <item
-        android:id="@+id/menu_settings"
-        android:title="@string/menu_settings"
-        android:icon="@drawable/ic_menu_settings"
+        android:id="@+id/menu_advanced"
+        android:showAsAction="never" />
+    <item
+        android:id="@+id/menu_file_size"
         android:showAsAction="never" />
 </menu>