Feature request: At order modification page, the user can't modify the order details

### Problem
At the order modification page, if a user selects an orderd item for modification only the room, and the comment can be modifyed. The user can't modify the orders actuall details like size or AB/KB exra toppings.

### Current workaround
Currently this only can be done if you cancel your order, and reorder the same item. This is inconvenient and can result the loss of the user's order, if someone else orders that item.

### Request
Be able to change all the same details of the order, as in the order menu.

Start by tracing the order modification page and comparing it with the order menu flow. Determine where room, comments, size, and AB/KB extra toppings are represented and persisted; done means every order detail available during ordering can be changed without cancelling and reordering.

Written by the indexing model from the issue text.