Adjusts navigation: no drop down for Forms, no link for main nav dropdowns
Adds gateway page script and link to cookie.js in index.html head, Adds link on gateway.html, Adds cookie js file.
Adds dummy gateway imgs, Styles link text
Adds dcfair placeholder img
Deletes dcfair.png from gateway page
Adds gateway bg img & half-circle imgs, Fixes padding & margins on dcfair & grounds, Adds hover state on half circles