Support for Single Page Applications on pages
Description
The problem is that currently if a link is clicked and then visited again later on an Angular/React single page application, it will 404. This can be mitigated by allowing the user to redirect all to index.
Proposal
Allowing the user to redirect all pages that follow a regex to one page, without throwing a 404.
Links / references
http://www.backalleycoder.com/2016/05/13/sghpa-the-single-page-app-hack-for-github-pages/