Show completed appointment types on visit page

The list of appointment types on the visit page should somehow highlight the appointments types that have been marked as finished (strikethrough?)

changed time estimate to 4h

created branch 115-show-completed-appointment-types-on-visit-page

mentioned in merge request !59 (merged)

closed via commit 4e67260d

closed via merge request !59 (merged)

changed milestone to %v0.8.0