* Add backend func. for muting users you follow
* Remove comment
* Add validations and update default value
* Send notifications to followers with all_articles
* Add MVP of notification subscriptions
* Add rate limiting for notification subscriptions
* Show modal for logged out users on subscribe click
* Add enter key functionality for checkbox
* Add relationships for notification subscriptions
* Add model test for notification subscription
* Deprecated article mutes in favor of notification subscriptions
* Deprecated comment mutes in favor of notification subscriptions
* Move comment muting tests and logic over
* Merge comment and article muting into subscriptions
* Remove redundant check
* Use database to check for rate limit instead of cache
* Test for subscriptions handling notifications properly
* Fix notification model spec for subscriptions
* Fix tests for subscriptions
* Remove rate limiting
* Properly handle logged out users getting subscription status
* Fix test for new pattern
* Update reserved words
* Add config column to notification subscriptions
* Add logic for top level config and move tests
* Test for top level subscribers getting notified
* Fix logic mistake oops
* Add index and refactor comment_user_ids
* Notifications unique indexes that take null values into account
* Specify import options for reaction notifications according to the indexes
* Fix specs: notifications have either user_id or organization_id
* Create notifications indexes concurrently
* Moved notifying followers to a service + specs
* Created an ActiveJob for notifiable action notifications
* Call the job from the Notification#send_to_followers
* Refactor creating notifiable action notification
* Handle possible nil followers while sending notifiable action notification
* Use activerecord import to bulk-create notifications
* Set notified_at for the bulk-created notifications
* Move compact to the appropriate place
* Send new comment notification service + specs
* Call new comment notification service from the model
* Return to non-bang notifications create
* An ActiveJob for the new comment notifications
* Call comments notification ActiveJob from Notification
