Add Birthplace to Core Data

The birthplace is an important central piece of data, which should be part of the core. Currently, it is necessary to generate printable certificates.

added part::backend prio::2 source::downstream type::feature workflow::confirmed labels

assigned to @lukasw

created merge request !751 (merged) to address this issue

mentioned in merge request !751 (merged)

changed the description

mentioned in issue #529 (closed)

closed with merge request !751 (merged)

mentioned in commit eb534925