Merge pull request ppy#8614 from nanaya/placeholder-hide-ts

Use css to hide placeholder

Merge pull request ppy#8635 from nanaya/room-listing-data

Restructure rooms listing

Merge pull request ppy#8629 from nanaya/score-pin-filter

Filter score pins by user

Merge pull request ppy#8624 from peppy/update-status-link

Update footer server status link to page rather than twitter

Merge pull request ppy#8584 from notbakaneko/feature/discussion-reply…

…-notification

Send notification when unresolved discussion is replied to

Merge pull request ppy#8594 from nanaya/wiki-disable-inline-container

Merge pull request ppy#8591 from notbakaneko/feature/discussions-more…

…-factory

Additional class-based factories for discussion-related tests

Merge pull request ppy#8583 from nanaya/unpolyfill

Clean up polyfills

Merge pull request ppy#8572 from notbakaneko/feature/empty-playlist-g…

…ames-text

Show different text for empty lists of different game types

Merge pull request ppy#8556 from nanaya/post-reply-remove

Remove unused css modifiers