copy+adapt specification model

[christianschaeffer]

A Specification is a list of items that something must contain to fulfill a certain requirement. It might be a legal obligation, a DIN norm, or an institutional requirement. Checklists can be checked to fulfill certain specifications.

[christianschaeffer]

We decided not to pursue this aspect for now, since it is unnecessary complexity for a first implementation.

However, if need be, the respective model + accompanying features can be copied from the prior project.