* In mw.uls.addPreviousLanguage, jQuery.map was used for what is essentially filtering, not mapping. Filtering was used to remove one element from array. Use Array.prototype.splice instead. * In mw.uls.getFrequentLanguageList, replace: - jQuery.each with Array.prototype.forEach - jQuery.inArray with Array.prototype.indexOf - jQuery.grep with Array.prototype.filter Change-Id: Id2208b3c89e982f91f49981d18e588ae8ce3b130