DAT-2255 Add Hero Image to WikiLabs only when it's enabled for new wikis
DAT-2255 Add Wiki Features image for Hero module
DAT-2255 Addressing code review remark
Merge branch 'dev' into DAT-2255

Conflicts:
	extensions/wikia/NjordPrototype/NjordHooks.class.php
	extensions/wikia/WikiFeatures/WikiFeatures.i18n.php
DAT-2255 Make Modular Mainpages hooks available to WikiLabs
DAT-2255 Fix path
DAT-2255 Fix WikiFeatures test
Merge branch 'dev' into DAT-2255

Conflicts:
	extensions/wikia/NjordPrototype/Njord.setup.php
Merge pull request #5641 from Wikia/DAT-2255

DAT 2255 - add hero module to wiki features