Unable to play media in firefox

[marcolarosa]

FYI @nthieberger

I think there are two issues here:

1. Firefox doesn't load the media file which causes the viewer to think that the user is not logged in (the please log in to nabu message is then shown). When we convert to using graphql for data loading this will be resolved to a more appropriate message like "we can't display this file" or some such.

2. I think the Nabu is setting the content-type incorrectly which is why firefox is not loading the file. Lodging a ticket in Nabu for terem to check this out.