Add HTTPS support with Caddy and clean up legacy files

- Add Caddy reverse proxy for automatic HTTPS with Let's Encrypt
- Update docker-compose.yml with Caddy service and internal networking
- Remove all Redis dependencies (not needed for this deployment)
- Fix Dockerfile permissions for instance and uploads directories
- Move legacy scripts to old_code_documentation folder
  - add_muted_column.py, check_fix_player.py, migrate_add_edit_enabled.py
  - docker-start.sh, run_dev.sh, start.sh, clean_for_deployment.sh
- Add HTTPS_SETUP.md documentation for Caddy configuration
- Update .env.example with DOMAIN and EMAIL variables
- Remove redis package from requirements.txt
- Remove rate limiting Redis storage from config.py

app/config.py

@@ -87,9 +87,6 @@ class ProductionConfig(Config):
     # Security
     SESSION_COOKIE_SECURE = True
     WTF_CSRF_ENABLED = True
-    
-    # Rate Limiting
-    RATELIMIT_STORAGE_URL = f"redis://{os.getenv('REDIS_HOST', 'redis')}:6379/1"
 
 
 class TestingConfig(Config):