Change comment permalinks from anchors to a separate view
Currently, comment permalinks (clicking the "Link" or "Parent" links in a comment's header) take you to the full comment page and just scroll to the comment using an anchor. We should switch this to an entirely different view of the thread that probably only shows the linked comment and its children, potentially allowing for some additional showing of the context (parents of the "target comment").
This will help with some of the issues we're having with linked-to comments being collapsed sometimes and topic visits being registered even if the person was just trying to check the context of a reply quickly. By implementing this as a separate view we can just restrict the collapsing/visit behavior to only trigger when someone's viewing a full thread.