Added an additional rule for img bato.to subdomains. - #14155

There's an announcement on the main page https://bato.to/ that "Batoto will be closing down permanently. Jan 18, 2018". https://img2.bato.to/ , https://img3.bato.to/ , and https://img4.bato.to/ are missing from DNS. https://img.bato.to/ has an invalid certificate error and the plain HTTP version http://img.bato.to/ eventually redirects to a 403.

I think this pull request should be closed without merging. Maybe some months from now we should remove the ruleset entirely. Please let us know if you disagree. We'll close this pull request if we don't get a response from you soon.

Currently, https://img.bato.to/ , https://img2.bato.to/ , https://img3.bato.to/ , and https://img4.bato.to/ are all Refused with https and require a login for http, so they are not good domains to include in the ruleset. I'm closing this pull request.