* Replace PollSkips find_or_create_by with create_or_find_by
* Use insert_all to add users to a channel in bulk
* Use bulk insert for DataUpdateScript and set private what shall be private
* oops
* Use pick instead of pluck first
* Use touch_all instead of update_all
* Use destroy_by instead of where.destroy_all
* Use scopes
* Fix db:seed:replant
* Remove ActiveSupport::Cache::RedisCacheStore expires_in cache
