anchor.diff:                  "payment_date": "2014-01-01",
                   "gross_amount": 9000
               }
  -        }
  +        ]
           
   ## Club Purchase Order Detail [/clubs/{id}/{year}/finances/purchase-orders/{po-id}]
   ### Get purchase order detail [GET]
  
positive.code: ### Get list of clubs [GET]
  + Response 200 (application/json)
  
          { "411": {"id": 411, "name": "ICU Cinema"} }
      
  ## Club [/clubs/{id}]
  ### Get club details [GET]
  
negative.code: ### Get a list of available shop products [GET]
  + Response 200 (application/json)
  
          [
              {
                  "name": "My Favourite Cat",
                  "submitted_by": "Anthony Smith",
                  "product_type": "WORLD",
  