Consider enabling the Template Repository feature

[pchote]

I just stumbled over creating-a-template-repository and creating-a-repository-from-a-template, which I had never heard of before.

We should look into this in more detail, (hopefully) enable it, and update the readme and getting started wiki pages to account for it.

[abcdefg30]

@Mailaender already changing this repository to a template repository. So we just need to update the docs now.