Refactor frontend components and backend migrations

- Removed TradingGraph component from frontend/src/components/trading.
- Updated home page to import Services component and TradingGraph from new path.
- Modified PortfolioPage to return null instead of PortfolioGrid.
- Added initial migrations for account, advertisement, commerce, configuration, downloader, gopay, stripe, trading212, and zasilkovna apps in the backend.
- Created Services component with subcomponents for Kinematografie, Drone Service, and Website Service.
- Implemented TradingGraph component with dynamic data generation and canvas rendering.
- Updated DonationShop component to display donation tiers with icons and descriptions.

backend/thirdparty/zasilkovna/serializers.py

@@ -35,7 +35,10 @@ class TrackingURLSerializer(serializers.Serializer):
 # -- SHIPMENT --
 
 class ZasilkovnaShipmentSerializer(serializers.ModelSerializer):
-	packets = serializers.PrimaryKeyRelatedField(many=True)
+	packets = serializers.PrimaryKeyRelatedField(
+		many=True,
+		queryset=ZasilkovnaPacket.objects.all()	
+	)
 
 	class Meta:
 		model = ZasilkovnaShipment