use a drag handle with icon

pdb-js/src/app/app.module.ts

@@ -33,6 +33,8 @@ import { DashboardPageComponent } from './dashboard-page/dashboard-page.componen
 import { NewDashboardComponent } from './dashboard-page/new-dashboard/new-dashboard.component';
 import { MatDialogModule, MAT_DIALOG_DEFAULT_OPTIONS } from '@angular/material/dialog';
 import {MatTableModule} from '@angular/material/table';
+import {MatGridListModule} from '@angular/material/grid-list';
+import {MatCardModule} from '@angular/material/card';
 import {MatBadgeModule} from '@angular/material/badge';
 import { DashboardComponent } from './dashboard-page/dashboard/dashboard.component';
 import { AddTextDialogComponent } from './dashboard-page/dashboard/add-text-dialog/add-text-dialog.component';
@@ -83,9 +85,11 @@ import { FocusDirective } from './focus.directive';
     MatAutocompleteModule,
     MatBadgeModule,
     MatButtonModule,
+    MatCardModule,
     MatCheckboxModule,
     MatDialogModule,
     MatFormFieldModule,
+    MatGridListModule,
     MatInputModule,
     MatRadioModule,
     MatProgressBarModule,