Halloween POAP (#4170)

* Start work on Halloween POAP banner

* Add slice and API

* Add claiming logic

* Improve styling

* Add persistence

* Move halloween component

* Fix test?

* Small styling tweak

* Fixes + copy

* Add notification priority

* Fix a few small issues

* Add logic to hide notification after halloween

* Fix imports

* Add more precise start and end for halloween promo

* Add slice test

* Add notificationPanel test

* Fix issue after rebase

* Add test for API service

* Fix type PR comment

* Move some logic to a separate component

* Small styling fixes

* Add more tests

* Improve mobile styling a bit

* Fix streching image on mobile

* Fix some centering

Author: FrederikBolding