API to Handle Party

• admin can create, update and delete a Party
• admin, capturer and visualizer can get a Party

changed milestone to %Candidates

added Backend label

added To Do label

added Doing label and removed To Do label

assigned to @apoyen

created branch 32-api-to-handle-party to address this issue

changed the description

mentioned in merge request !25 (merged)

closed via merge request !25 (merged)

mentioned in commit e89c83f8