NetlifyCMS uses "pages" instead of "content/pages"

[andresf91]

Describe the bug
When editing from NetlifyCMS, the Pages collection is set up to use the folder pages instead of content/pages. So it doesn't let us edit pages already in content/pages and it creates new pages in pages which only contains the HTML code generated from the body field.

To Reproduce
Steps to reproduce the behavior:

1. Quick launch link to Deploy to Netlify.
2. In Netlify, enable Identity and Git Gateway. Send an invite to your email and setup a password.
3. From GitHub, edit _data/site.json and set "enableNetlifyCMS" to true.
4. Access NetlifyCMS.
5. Check Pages collection. It will be empty.

Expected behavior
I expected to be able to edit existing pages and create new pages which should properly.

Screenshots