Update strings.js
do not do animateUsingClass on hidden elements

webkitTransitionEnd won't fire when the element is hidden
and the animation class will stay on the element
Merge pull request #7710 from diomed/patch-3

Update strings.js
Merge pull request #7713 from adobe/zaggino/fix-7639

do not do animateUsingClass on hidden elements
Updated by ALF automation.
Merge pull request #7733 from adobe/alf_localization

ALF Automation