GitlabManager => Replace reduce by the new removeObjectDuplicates function

NodeApp/src/managers/GitlabManager.ts

@@ -212,7 +212,7 @@ class GitlabManager {
             return false;
         }
 
-        members = members.reduce((unique, user) => (unique.findIndex(uniqueUser => uniqueUser.id === user.id) !== -1 ? unique : [ ...unique, user ]), Array<GitlabUser>());
+        members = members.removeObjectDuplicates(gitlabUser => gitlabUser.id);
 
         return members;
     }