anchor.diff:  ### setFavorite [POST]
   Sets the favorite status of an entry in the phonebook
   + Parameters
  -    + Authorization (string)
  -    
  +    + Authorization (string)  
       + id (number, required)
  -    
       + setting (string, optional)
  -
   
   + Response 201
   
  -    Favorite set successfully
  -
   + Response 400 
  -
  -    Bad arguments
   
   + Response 401 
   
  -    User not authorized
  -
   + Response 404 
  -
  -    Entry not found for given ID
  -
  -
   
   
   ## Phonebook By Id [/phonebook/{id}{?Authorization}]
  
positive.code: 
  + Response 204
  
      OK
  
  + Response 401 
  
      User not authorized
  
  + Response 404 
  
      Entry not found for given ID
  
  
  
  
  
  # Group user
  
negative.code: Creates new user entry
  
  + Response 200 (application/json)
      + Attributes (UserEntry)
  
  
  # Data Structures
  
  ## PhonebookEntry (object)
  + id (number) 
  + title (string) 
  + firstName (string) 
  + lastName (string) 
  + phoneNumber (string) 
  + email (string) 
  + favorite (boolean) 
  
  
  ## PhonebookEntries (object)
  + entries (array[PhonebookEntry]) 
  
  
  ## UserEntry (object)
  + key (string) 
  
  