Improve readme markup, fixes #7455
Created by: Razer6
What does this MR do?
- Render readme markup rendering fails, throw no 500 error
- Render readme we support if there are multiple readmes in repo
- Render readme with
simple_formatif we don't have a proper render, to preserve style
Why was this MR needed?
- Currently, if markup fails for some reason, GitLab displays a 500 error.
- If we've a readme without a render, readme looks ugly
What are the relevant issue numbers?
This PR fixes
- #7455 (closed).
- http://stackoverflow.com/questions/25169393/gitlab-rendering-the-wrong-readme-in-project-public-views/25193268#25193268
It's also related to #7023 (closed) and https://gitlab.com/gitlab-org/gitlab-ce/issues/296 /cc @jacobvosmaer
@jvanbaarsen Could you review?