Rework mobile design of Person overview page

mobile_view

added part::frontend label

added type::refactoring label

Preferably to be done after #524 (closed) is done (due to more data being displayed)

removed type::refactoring label

added type::bug label

mentioned in merge request !751 (merged)

created merge request !770 (merged) to address this issue

mentioned in merge request !770 (merged)

assigned to @ZugBahnHof

closed with merge request !770 (merged)

mentioned in commit 6be90653