anchor.diff:  ## Collections
   
   ### DeckCollection (array)
  -+ 0: (Deck0)
  -+ 1: (Deck1)
  -+ 2: (Deck2)
  ++ (Deck0)
  ++ (Deck1)
  ++ (Deck2)
   
   ### FlashcardCollection (array)
   + (Flashcard0)
  
positive.code:  - resources for Test results added
  ## 23/03/2016 toja
   - method to get logged user added
   
  
  # TODO
  
negative.code: + (Flashcard2)
  
  ### DeckWithCountCollection (array)
  + (DeckWithCount0)
  + (DeckWithCount1)
  + (DeckWithCount2)
  
  ### TipCollection (array)
  + (Tip0)
  + (Tip1)
  + (Tip2)
  
  ### TagCollection (array)
  + (Tag0)
  + (Tag1)
  + (Tag2)
  
  ### FlashcardResultCollection (array)
  + (FlashcardResult0)
  + (FlashcardResult1)
  + (FlashcardResult2)
  
  ## BadRequestResponse (object)
  + code: `E001` (string, required) - TODO sample error code
  