[Fix #2] Change sort order in basket

src/core/marketplace.cpp

@@ -113,7 +113,7 @@ Seller* Marketplace::findSellerWithUuid(const std::string& uuid)
 
 void Marketplace::addArticleToBasket(std::unique_ptr<Article> article)
 {
-    basket_.push_back(std::move(article));
+    basket_.insert(basket_.begin(), std::move(article)); // article to the beginning of the basket vector
 }
 
 size_t Marketplace::basketSize() { return basket_.size(); }