message: Rerooted to Child component for preselection in mat-tab-nav-bar
diff: @@ -16,11 +16,9 @@ const routes: Routes = [
  canActivate: [AuthGuardService],
  data: {roles: ['student', 'tutor', 'teacher', 'admin']},
  children: [
  - {
  - path: '',
  - component: CourseOverviewComponent,
  - canActivate: [AuthGuardService],
  - data: {roles: ['student', 'tutor', 'teacher', 'admin']}
  + { path: '',
  + redirectTo: 'overview',
  + pathMatch: 'full'
  },
  {
  path: 'overview',
  @@ -41,7 +39,7 @@ const routes: Routes = [
  data: {roles: ['student', 'tutor', 'teacher', 'admin']}
  }
  ],
  - },
  + }
  ];
  @NgModule({
  