fix ics validation

server/api/controller/event.js

@@ -254,6 +254,7 @@ const eventController = {
         // last arg is alarms/reminder, ref: https://github.com/adamgibbons/ics#attributes (alarms)
         exportController.ics(req, res, [event], [{
           action: 'display',
+          description: event.title,
           trigger: { hours: 1, before: true }
         }])
       }