* Start refactoring articles update
* Articles update refactoring
* Added a couple of tests for Articles::Updater
* Reorganized code in Articles::Updater and ::Attributes a bit
* A couple of more tests for Articles::Attributes
* Reverted changed in the articles_controller
* Edited_at in Articles::Attributes
* Use Articles::Updater in ArticlesController
* Tests for notifications when published/unpublished an article
* Removed old code
* Return result object from Articles::Updater
* Don't reset articles collection when no series was passed
* Fixed sending notifications when published an article the first time
* Fix articles collection when updating
* Fix setting attributes for articles update
* Spec for articles update via api failure
* More tests for Articles::Updater
* More specs for articles updating
* Pass article instead of article_id to articles updater to avoid loading an article twice
* Remove the redundant check in the articles_controller
* Articles::Attributes refactoring