[tedmiston]

The way it works now is quite useful. However, if I have a popup open, then dismiss it, the URL does not change back to having no fragment. I wish it did that.

For example, if I open two class popups, then hit the back button twice, I'd expect to end up on the overview page with no popup open, but what actually happens is the last popup stays up even while the URL changes.

The other case is, if I have a popup open, then close it, I'd expect the URL to change to having no fragment to reflect that, but instead the old fragment sticks, so a reload would actually show the last popup you had open.

These are obviously minor things and I like the project, so I hope not to come across too nitpicky.