tests: change test for close.zf.offcanvas, add test for closed.zf.offcanvas
tests: change test for close.zf.offcanvas, add test for closed.zf.offcanvas

zurb/foundation-sites,abdullahsalem/foundation-sites,zurb/foundation-sites,zurb/foundation,denisahac/foundation-sites,zurb/foundation,DaSchTour/foundation-sites,zurb/foundation,denisahac/foundation-sites,denisahac/foundation-sites,abdullahsalem/foundation-sites,abdullahsalem/foundation-sites,DaSchTour/foundation-sites,zurb/foundation-sites