[OSGeo] #3052: Upgrade pretalx to latest version

[OSGeo]

#3052: Upgrade pretalx to latest version
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 Reporter:  robe      |       Owner:  sac@…
     Type:  task      |      Status:  reopened
 Priority:  normal    |   Milestone:  Sysadmin Contract 2024-I
Component:  SysAdmin  |  Resolution:
 Keywords:            |
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Comment (by robe):

 I've rolled back to old pretalx until I figure out why it is not reading
 the volume folders.

 Issue is it's not reading the /data/media folder, though if I upload a
 file, it does put it in the right place, but for some reason the web app
 is not mapping /data/media to url /media

 I had thought maybe I wiped out the volume, but all files are there.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3052#comment:8>
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