only have add show button on full calendar when the add show form isn't displayed.

public/js/airtime/schedule/add-show.js

@@ -123,6 +123,9 @@ function setAddShowEvents() {
             $("#schedule_calendar").width(y+z+50);
             $("#schedule_calendar").fullCalendar('render');
 			$("#add-show-form").hide();
+
+            //in full-calendar-functions.js
+            makeAddShowButton();
 		});
 
 	$("#add-show-submit")