Once a website is accessed, don't block it for X minutes

[axilis-marko]

So if I do decide to visit a webpage, and need to refresh it, I'd like for the prompt to show up only after some X time. Otherwise, I need to wait on every refresh, when I've already committed to visiting it. Having it pop up after 10mins would be a good signal on how much time has been spent.

p.s. I've noticed this probably isn't maintained that much, so I could have a look and give a PR