Fix multiple sites (#9325)
Fix multiple sites (#9325)

- Blackboard: Closes #8352
- Quora: Quora+ ad
- Menti: Some icons
- TikTok: A music logo
- wikiHow: Premium ad

Removed
- Tumblr: Classic home screen no longer exists

Co-authored-by: Gusted <d02dbed052e28c2380acdd37568fd76142823678@hotmail.com>
darkreader/darkreader,darkreader/darkreader,darkreader/darkreader