Merge pull request refinery#117 from gabyshev/fix-comparison-fixnum-w…

…ith-nil

Fix refinery#110 issue. Add :position param to Refinery::Portfolio::Admin::ItemsController

app/controllers/refinery/portfolio/admin/items_controller.rb

@@ -31,7 +31,7 @@ def find_gallery
 
         private
           def item_params
-            params.require(:item).permit(:title, :caption, :image_id, :gallery_id)
+            params.require(:item).permit(:title, :caption, :image_id, :gallery_id, :position)
           end
 
       end