* ignore copying frontend/dist folder - otherwise whatever you build in docker will get overridden by local build artifacts if any exist in frontend/dist
* support configuring redis with POSTHOG_REDIS_HOST and other vars in addition to REDIS_URL
* remove "the next version" in worker requirement modal
* split beat and celery scripts
* remove chart folder
* celery heartbeat every 10sec, reduce distributed beat lock hold time
* remove dockerfile local link
* add localhost redis url for tests
* add warning script to settings and docker-worker in case REDIS_URL is not found
* test celery heartbeat
* save celery heartbeat in redis
* /_stats/ with worker heartbeat
* refactor top content
* show worker stats
* heartbeat delay to 90sec
* update worker error message
* remove line
* add redbeat schdeduler
* add redbeat for local development
