Improve a11y search

See https://github.com/unl/wdntemplates/pull/886

www/js/search.js

@@ -360,6 +360,14 @@
}
passiveQuery(q, false);
});
+				
+				if (window.parent != undefined) {
+					$(document).on('keydown', function(e) {
+						if (e.keyCode === 27) {
+							window.parent.postMessage('wdn.search.close', "*");
+						}
+					});
+				}
});
});