Cookbook - Create a custom Contao module

[lionel-m]

I would be helpful to rewrite this tutorial to make it compatible with Contao 4.

WDYF?

[aschempp]

That tutorial was actually for Contao 2.x and is very much outdated. It's just kept for reference because a lot of the information still applies. And it still does for Contao 4. I've asked @qzminski before and he didn't want to update the tutorial…

[qzminski]

Indeed I am not willing to continue that work.