Constraint: Activatable prerequisite options #111
Description
Check that prerequisites on activatable entries that have options provide a correct set of options.
For example, it needs to be ensured that for an obligation a maximum of one option is provided and that the option is a general select option of that entry.
However, before this is possible, there needs to be a way of specifying how many of which options are possible so that it can be checked in a generalized way.