Minor updates improving menu behavior.

1) Ensure advanced options are always visible.
2) Position search before create folder.
3) Force create-directory into the overflow menu.

And the rider on the bill...

4) Disable Drag/Drop with a static boolean flag.

Change-Id: I173cedf0eb7e11d824377b77ce701eb88de7c1e1
diff --git a/res/menu/activity.xml b/res/menu/activity.xml
index 5b944ab..f23ea32 100644
--- a/res/menu/activity.xml
+++ b/res/menu/activity.xml
@@ -16,11 +16,6 @@
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item
-        android:id="@+id/menu_create_dir"
-        android:title="@string/menu_create_dir"
-        android:icon="@drawable/ic_menu_new_folder"
-        android:showAsAction="always" />
-    <item
         android:id="@+id/menu_search"
         android:title="@string/menu_search"
         android:icon="@drawable/ic_menu_search"
@@ -28,6 +23,11 @@
         android:actionViewClass="android.widget.SearchView"
         android:imeOptions="actionSearch" />
     <item
+        android:id="@+id/menu_create_dir"
+        android:title="@string/menu_create_dir"
+        android:icon="@drawable/ic_menu_new_folder"
+        android:showAsAction="always" />
+    <item
         android:id="@+id/menu_sort"
         android:title="@string/menu_sort"
         android:icon="@drawable/ic_menu_sortby"