Better Navigation(?), Part Two in Site Updates

OK, so the navigation on the entry page should be consistently at the bottom of the page below the Leave a comment box. It's basically the same format, but slightly different depending on how you get to the entry. If you visit it directly from someone's profile page or book listing, you'll be able to navigate back and forth by the author you're currently reading. If you clicked in from your Bookmarks page, you'll be able to navigate back and forth within your bookmarks. If you visited from the latest entry listing on the main page, you'll be able to skip back through recent entries.

I may also add a way to switch the navigation mode, but that's not there yet. But I still think I like it better than the old way. This involved a lot of messing around in the code, so if something seems broken to you, let me know. :)