Changed ShoppingListRequest so shopping list ID is not needed when posting

src/main/java/ntnu/idatt2016/v233/SmartMat/dto/request/ShoppingListRequest.java

@@ -11,12 +11,7 @@ import lombok.Data;
 @Builder
 @AllArgsConstructor
 public class ShoppingListRequest {
-
-    /**
-     * The unique identifier of the shopping list.
-     */
-    private long id;
-
+    
     /**
     * The unique identifier of the group for which the shopping list is requested.
     */

src/main/java/ntnu/idatt2016/v233/SmartMat/service/ShoppingListService.java

@@ -24,7 +24,7 @@ public class ShoppingListService {
     
     /**
      * Create and save a shopping list to the database
-     * @param shoppingList the shopping list to save
+     * @param shoppingListRequest the shopping list to save
      * @return the saved shopping list
      */
     public ShoppingList createShoppingList(ShoppingListRequest shoppingListRequest) {