Add tomorrow's menu

[JohnEriksson00]

As titles suggests, add ability to show tomorrow's menu.

[rmeneghelo]

To do this issue, it would rather have the configuration file with the BACKEND_URL to test it. Could you provide it or remove it from git.ignore and push it to the repository?

[hsson]

I'm afraid this feature would require changes to the backend first of all. The repository for the backend can be found at:
https://github.com/hsson/card-balance-backend

You could clone it and run it to test locally.