Feature/reorder my queue

I have 3 difference implement
1. Using PATCH to update order, not POST
2. Check the input order can't same number. (queue_items_controller.rb:24)
3. Using validation condition to prevent the validates review create without content (review.rb:5)

Any suggestion? Thanks.
I forget the list_order, it is test the user can hot modify other user's queue, I am modify my code.
It is supposed testing `QueueItem.find(queue_item.id).list_order`, not testing the ID.