Placeholder-Insert: Only elements of the first level are displayed #99
Description
Only elements of the first level are displayed.
It should be possible to select elements that are nested and exclude all nodetypes that are not needed for the editor.
There should be an option with which individual NodeTypes can be excluded.
The "error" is particularly annoying when there are nested elements, as can be seen in the screenshot.
Comparison between the current and how it should be
Current:
The Content-Tree:
How it would be if all elements are selectable:
In this example the options that are labeled with "Spalte" or their identifier are not required for the Confirmation or E-Mail-Finisher.
How it should be:
