feat: username/ww login, tijdzone fix, Vannacht → Eergisternacht"

docker-compose.yml

@@ -6,6 +6,7 @@ services:
     container_name: slaapkampioen
     restart: unless-stopped
     environment:
+      TZ: Europe/Brussels
       DATABASE_URL: postgresql://sleep:${POSTGRES_PASSWORD}@db:5432/sleep
       NEXTAUTH_URL: ${NEXTAUTH_URL}
       NEXTAUTH_SECRET: ${NEXTAUTH_SECRET}