My queue1

Compared to the solution I have found out, there are nice shoulda matchers to help refactor delegation specs in queue_item_spec.rb

1) add my_queue routes, view
2) add queue_item model + spec, queue_items_controller + spec
3) add index queue_item specs + code
4) add create queue_item specs + code
5) add destroy queue_item specs + code
6) adjust my_queue view

Please approve.