Fix order in structure

lib/tasks/migrate.rake

@@ -350,4 +350,16 @@ namespace :migrate do
       ModuleApp.new.from_json(File.open("#{Rails.root}/vendor/built_in_modules/gallery/gallery.json").read).save
   end
 
+  task :reorder_items => :environment do
+    reorder_children(Item.root)
+  end
+
+  def reorder_children(parent)
+    parent.children.each_with_index do |child, i| 
+      child.position = i
+      child.save
+      reorder_children(child) if child.children
+    end
+  end
+
 end