UPDATE: Threads archivation

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I decided to write small posts about new updates each time I made one. Now old threads will be archived if the board contains more than 50 (default value) threads. Playlist of this update - https://open.spotify.com/playlist/2ja04zMET3b64xaa0CbJ9b TECH INFO: * add new field in `posts` table (is_archived) * add a method to get the oldest thread `updated_at` field * add a method to set `is_archived` filed to `true` for every thread that has `updated_at` earlier than the oldest

ну бля пиздец, верстки пока нету, сори, пацаны))0)

UPD: add line breaks