Potentially use new `route-pattern` meta tag

[fregante]

I see a new meta tag that we could use in some situations. I don't think we should actually drop our own URL-based detections, but we can use these to disambiguate some situations

isRepoHome

<meta name="route-pattern" content="/:user_id/:repository">

isIssueList

<meta name="route-pattern" content="/:user_id/:repository/issues(.:format)">

isRepoTree

<meta name="route-pattern" content="/:user_id/:repository/tree/*name(/*path)">

[fregante]

On this issue the tag looks like this:

<meta name="route-pattern" content="/_view_fragments/issues/show/:user_id/:repository/:id/issue_layout(.:format)">

which is not what we expect/need. Closing