message: Fix unit report component
diff: -<h3>Details for unit {{unit.name}}</h3>
  +<h3>Details for unit {{unit?.name}}</h3>
  <div class="progress-container" *ngFor="let user of userUnitProgress">
  <app-user-profile [user]="user" [userId]="this.userService.user._id"></app-user-profile>
  <div class="progress-submission">
  