Simplifies and changes the iframe HTML construction to use DOM node construction (#2304)
Simplifies and changes the iframe HTML construction to use DOM node construction (#2304)

* Simplifies and changes the iframe HTML construction to use DOM node construction

Also fixes an error where mozallowfullscreen and webkitallowfullscreen wasn't being applied to youtube iframes

* fixed jscs issues

arsthanea/OwlCarousel2,smashingboxes/OwlCarousel2,smashingboxes/OwlCarousel2,arsthanea/OwlCarousel2