CON-2309 modify autohide script for GlobalNav so it respect scroll Value
CON-2309 show all nav when user uses one of its elements
CON-2309 use pageYOffset instead of window.scrollY
CON-2309 change logic slightly for touch screens
CON-2309 use win.skin instead of checking class on body
Merge pull request #5644 from Wikia/CON-2309

CON-2309 modify autohide script for GlobalNav so it respect scroll Value