Open tickets on mobile close filter sidebar

Added line to close the filter sidebar when selecting a ticket to open on a mobile screen.

apps/static/assets/js/tickets.js

@@ -260,6 +260,7 @@ function applyTicketClickFunction() {
     $(".email-list-item").on("click", function(e) {
         e.preventDefault();
         displayTicket(this);
+        $('.email-app').removeClass('side-active');
         $('.email-content').toggleClass('open');
     });
 }