Skip the "Tracks" section of the editor if there is only one track

[oas777]

Cf. https://oc.tobira.ethz.ch/editor-ui/index.html?mediaPackageId=25e82f02-db10-4ba6-937f-3252353cfbe8.

Or is there a reason to offer no option there?

[Arnei]

Nah, there is no reason to offer no option there. That was lazy coding, hoping that we get the #1009 sooner rather than later, because then it would make sense to show the track section for a single track provided it has both video and audio.

I suppose one could also make an argument for having the menu bar be consistent across events, even if one or more menu points are moot.

By "skip" I suppose you mean to not show the "Tracks" button in the left column at all if there is only one track, right?

[oas777]

Yes, don't show the "Tracks" button to the left.