Youtube Addblock Block Block per rasta361

This Add-On removes the popup that youtube shows you, when you watch with an addblocker. It also reloads the page when youtube tries to force you to sit through an add, even if you only see a black screen thanks to your addblocker.
Since youtube doesn't seem to roll out addblock prevention to all users at once, I can only deal with them as I encounter them. They're also inconsistent, which makes them hard to test. I, for example, don't get the popup anymore. Please let me know if you encounter any problems and I'll do my best to fix them.