Allow empty folders

[mansona]

This allows you to delete the page folder and also the tag folder without the build exploding. This doesn't go so far as allowing you to also delete the content folder or the author folders because those are pretty required i.e. the app will not work without these 😂

If we think this doesn't go far enough we could add a quick check to the index.js file to give a more sensible error when they try to build without any content or authors 👍

[elwayman02]

I think a sensible error would be nice, because some users will probably aggressively delete the sample content/authors generated by the blueprint and forget to generate new ones.

[elwayman02]

Also, I think that the app should still be able to build without content. It's just a blog with no posts, which is how every blog starts. The app should still run and show the page structure, IMO. Someone who's first setting up a blog might want to work on page content first, adding and About page or other things to the navigation before they've written any blog posts. That app should still build and be deployable even though it doesn't have any content. And if there's no content, there may not be any authors yet. So I do think that's a valid use-case that should be supported.

[elwayman02]

That said, I do think that it's unlikely we'd ever want to delete the content and author folders permanently, which IMO means the correct approach for those two directories is to use gitkeep so they for sure exist even when empty.