close visit for deceased or resigned subjects

if there is a follow up scheduled in the future without any appointments - remove it

Remove future follow up visit when a subject is resigned or deceased.

changed the description

assigned to @carlos.vega

added To Do label

mentioned in commit 45c9f15c

added Done label

removed To Do label

mentioned in merge request !178 (merged)

mentioned in commit c566f950

closed via merge request !178 (merged)

changed milestone to %0.12.0