API to handle Candidates

Admins can create a Candidate (CandldiateListID must be set !) update all the fields

Admins, capturer and visualizer can get the Candidates

changed milestone to %Candidates

added Backend label

changed title from API to handle Capturers to API to handle Candidates

added To Do label

assigned to @apoyen

added Doing label and removed To Do label

created branch 30-api-to-handle-candidates to address this issue

mentioned in merge request !29 (merged)

mentioned in commit f1cf6e4a

closed via merge request !29 (merged)