Custom Header Links: links reload Discourse

Reverting the change from @j.jaffeux breaks internal links in a different way. I wouldn’t use a forked plugin - it just means when this gets fixed for real you won’t receive the changes automatically.

The commit in question:

https://github.com/discourse/discourse-custom-header-links/commit/bfda9d3b50bd8e027024b62aa0b7e68611248073