Merge remote-tracking branch 'origin/CON-NewArticle' into CON-2003

Conflicts:
	tests/karma/js-unit.conf.js
CON-2003 move user tools logic to separate extension and enable it on Venus
Merge branch 'CON-2004' into CON-2003

Conflicts:
	extensions/wikia/ArticleNavigation/scripts/articleNavigation.js
	extensions/wikia/AssetsManager/configGroups/VenusConfig.php
CON-2003 CR fixes
Merge pull request #5338 from Wikia/CON-2003

Con 2003