Left clicking link to /posts.rss does not work

Contribute Bug
4

I think i found the solution, but it was a little tricky to do it, the route is not being sent to the server, i made a whitelist checker to know if the route is internal or not, can you review this @zogstrip @codinghorror @sam? I can make a PR if you want to, this works actually.

  isInternalPathButNotEmber: function(path){
    return path.indexOf("posts.rss") >= 0
  },

  routeTo(path, opts) {
    if (Em.isEmpty(path)) { return; }

    if (Discourse.get('requiresRefresh') || this.isInternalPathButNotEmber(path)) {
      document.location.href = Discourse.getURL(path);
      return;
    }