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/configuration/migrations/0001_initial.py

@@ -0,0 +1,43 @@
+# Generated by Django 5.2.9 on 2025-12-14 02:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SiteConfiguration',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(default='Shop name', max_length=100, unique=True)),
+                ('logo', models.ImageField(blank=True, null=True, upload_to='shop_logos/')),
+                ('favicon', models.ImageField(blank=True, null=True, upload_to='shop_favicons/')),
+                ('contact_email', models.EmailField(blank=True, max_length=254, null=True)),
+                ('contact_phone', models.CharField(blank=True, max_length=20, null=True)),
+                ('contact_address', models.TextField(blank=True, null=True)),
+                ('opening_hours', models.JSONField(blank=True, null=True)),
+                ('facebook_url', models.URLField(blank=True, null=True)),
+                ('instagram_url', models.URLField(blank=True, null=True)),
+                ('youtube_url', models.URLField(blank=True, null=True)),
+                ('tiktok_url', models.URLField(blank=True, null=True)),
+                ('whatsapp_number', models.CharField(blank=True, max_length=20, null=True)),
+                ('zasilkovna_shipping_price', models.DecimalField(decimal_places=2, default=50, max_digits=10)),
+                ('zasilkovna_api_key', models.CharField(blank=True, help_text='API klíč pro přístup k Zásilkovna API (zatím není využito)', max_length=255, null=True)),
+                ('zasilkovna_api_password', models.CharField(blank=True, help_text='API heslo pro přístup k Zásilkovna API (zatím není využito)', max_length=255, null=True)),
+                ('free_shipping_over', models.DecimalField(decimal_places=2, default=2000, max_digits=10)),
+                ('multiplying_coupons', models.BooleanField(default=True, help_text='Násobení kupónů v objednávce (ano/ne), pokud ne tak se použije pouze nejvyšší slevový kupón')),
+                ('addition_of_coupons_amount', models.BooleanField(default=False, help_text='Sčítání slevových kupónů v objednávce (ano/ne), pokud ne tak se použije pouze nejvyšší slevový kupón')),
+                ('currency', models.CharField(choices=[('CZK', 'cz#Czech Koruna'), ('EUR', 'cz#Euro')], default='CZK', max_length=10)),
+            ],
+            options={
+                'verbose_name': 'Shop Configuration',
+                'verbose_name_plural': 'Shop Configuration',
+            },
+        ),
+    ]