CON-2325 keep resultsLang after global search
Merge remote-tracking branch 'origin/CON-2324' into CON-2325

Conflicts:
	extensions/wikia/GlobalNavigation/GlobalNavigationHelper.class.php
	extensions/wikia/GlobalNavigation/templates/GlobalNavigation_searchIndex.php
CON-2325 use cont lang instead of user lang
Merge remote-tracking branch 'origin/dev' into CON-2325

Conflicts:
	extensions/wikia/GlobalNavigation/templates/GlobalNavigation_searchIndex.php
CON-2325 fix unit tests
Merge pull request #5737 from Wikia/CON-2325

Con 2325