WIP
Merge branch 'PromoteRefactor' into PromoteRefactor-WIP-Seba

Conflicts:
	extensions/wikia/CityVisualization/classes/PromoImage.class.php
	extensions/wikia/CityVisualization/classes/PromoXWikiImage.class.php
	extensions/wikia/CityVisualization/classes/WikiGetDataForPromoteHelper.class.php
	extensions/wikia/CityVisualization/helpers/WikiaHomePageHelper.class.php
	extensions/wikia/CityVisualization/models/CityVisualization.class.php
Let's not forget this :)
Restored needed, but deleted methods
Implemented purging from Image Review