* Enable new Rails/* cops and use autocorrect on them
* Fixed Rails/PluckInWhere leftovers
* Fix Rails/DefaultScope
* Enable and fix Rails/PluckId
* Fix manual mistake with forcing autocorrection on Rails/PluckId
* Apply PR feedback to remove Rails/PluckId inline disables
* Apply PR feedback to get rid of Rails/PluckInWhere inline
* Add 'feature_flag' field to pages table, form
* Add 'exist?' to FeatureFlag
* Test for feature flag when loading custom pages
* Refactor FeatureFlag.enabled? to check both boolean and user gates
* Ugly test fixes
* PR feedback and refactoring
* PR refactor: don't require database table!
* Refactored Pages::BustCacheJob to Pages::BustCacheWorker
* Removed Pages::BustCacheJob and specs
Co-authored-by: Edward Tam <edward6882990@gmail.com>