Modern uses IDs in the footer that don't match with other skins. Let's settle on standard IDs.
- #mw_copyright => #footer-copyrightico
- #mw_poweredby => #footer-poweredbyico
- #footer-info-privacy => r => #footer-places-privacy
- #footer-info-about => #footer-places-about
- #footer-info-disclaimer => #footer-places-disclaimer
- #footer-info-contact => #footer-places-contact
- #footer-info-mobileview => footer-places-mobileview
Given the low usage of Modern it should be fine to do this right away. Please tag User-notice once code is merged.