message: Fixes task import
diff: @@ -72,8 +72,8 @@ taskUnitSchema.statics.import = function(taskUnit: ITaskUnit, courseId: string,
  return Promise.all(tasks.map((task: ITask) => {
  return Task.import(task, taskUnitId);
  }))
  - .then((importedUnits: ITask[]) => {
  - savedTaskUnit.tasks.concat(importedUnits);
  + .then((importedTasks: ITask[]) => {
  + savedTaskUnit.tasks = savedTaskUnit.tasks.concat(importedTasks);
  return savedTaskUnit.save();
  });
  })
  