Help desk: New comments of visited topics don't load

Hi, unfortunately the problem mentioned here:
https://help.locusmap.eu/topic/24593-new-entries-in-help-desk-topic-only-show-up-after-reloading-the-topics-page
still exists.

I analysed the issue, and its because of false set cache-headers of your server:

1. deprecated header "Pragma: no-cache"
   but it's info is correct: Don't use cached sites in a forum/helddesk but always deliver the a fresh site with the latest comments.
2. Cache-Control: private, must-revalidate, (max-age=2592000)
   max-age is just set if User is logged-out.
   is the correct header regarding site-cache but using the wrong values for a helpdesk/forum: right now the site always loads the cached (=old) version of a site without the latest comments. Use: "Cache-Control: no-cache"
3. Expires: Wed, 10 Jan 2024 11:37:28 GMT
   delete it, makes no sense for uncached sites and tells Browser to load old, cached version until Jan 10th 2024

Please fix these headers within the help.locusmap.eu Server, thanks.