Issue #2073033 by claudiu.cristea, netsensei: Optimize file usage updates in file/image fields.
Issue #2102503 by swentel: Fixed Convert ContentTranslationController to CMI.
Issue #2101661 by swentel: Fixed Update cache checking logic in core/includes/langauge.inc to use config system.
Merge remote-tracking branch 'origin/8.x' into rest-url-patterns-2019123