Allow to enable/disable modules

I successfully enabled a module with the prototype already :D

But it needs cleanup and the disable action is missing too.

I discussed this with @marcus_johansson - the main points were:

- An agent for enabling/disabling modules makes sense
- Enabling modules is easy to achieve
- When disabling modules one must make sure that the user is informed about consequences (Content loss)

In order to get things done I'd reduce the scope to enabling modules which seems to work:

Also a cool follow-up would be enabling recipes as that is much safer and much more "Drupal CMS" ey. Is it worth tying this to permissions?

marcus_johansson → closed merge request !1

This was merged together with a complete refactor. I added the question element to it as well.

Automatically closed - issue fixed for 2 weeks with no activity.