Print: selected periods are printed in random order

[pmattmann]

If you have a content with the period selector in the print configurator, the periods are printed in the order in which the periods were clicked.

Originally posted by @pmattmann in #5732 (comment)

[carlobeltrame]

In my opinion, this is a feature, not a bug. One might not always want them in chronological order, e.g. when working around the impossible overlapping periods, or when a separate period is used as a container for activities which can be flexibly arranged during the camp (such as Wahlblöcke in a course).

[pmattmann]

In this case, it would be nice if the feature were more transparent.

Idea:
A list of period dropdowns. Whenever all dropdowns have selected a period, a new dropdown appears.

You could also print the following list:

• Vortrupp
• Hauptlager
• Vortrupp