[#44003119] Update order specs to use array of items.
[#44003119] Add order specs for updating item by their index
[#44003119] Add order specs for updating item by their index
Merge branch '44003119_change_roles_to_be_an_array_of_items' of github.com:llh1/lims-api into 44003119_change_roles_to_be_an_array_of_items

Conflicts:
	spec/integrations/order_spec.rb
[#44003119] Refactor update item by index
[#44003119] Fix items array in the specs.
[#44003119] Fix items array in the specs.
Update order documentation with items array
Fix documentation for order items array
Fixing specs
[fixes #44003199] changes roles to [items]
Merge pull request #90 from maxigit/44003119_change_roles_to_be_an_array_of_items

44003119 change roles to be an array of items
Merge remote-tracking branch 'sanger/development' into development