Events api for calendarjs no longer accisible for unauthorized users

Luuk Scholten
2017-12-10T21:29:25+01:00

Unauthorized users can no longer execute api call to calendarjs api.

### Current behaviour
There are no more events on the calendar if you are not authenticated. This is because the api results in a 403.

### Expected behaviour
There should be events on the calendar if you are not authenticated

### Steps to reproduce

1. Go to `beta.thalia.nu`
2. Go to calender
3. Open the developer console
4. See that the api results in a 403