Added many polish pages

Hi,

I've forked and added many polish sites to the filterlist.txt.
Also updated the linux runner for generating the checksum because it was printing the date in local (polish) format :-)

Since I am not a git master (haven't used it in quite a while) I hope I didn't mess something up when refreshing from your code. I've merged your latest revision to avoid any conflicts.

PS. As you can see I removed some site-specific rules, but added a generic ones instead. This is because many pages belong to the same media group (as in "company") and use the same format for rendering the cookie info, but the domains vary. I think it's best not to duplicate them.

PS. Many thanks for your the work. I hope I can contribute regularly to your repo.