build: Replace Codelyzer and TSLint with Angular ESLint

Migrate from the deprecated TSLint to Angluar ESLint. Also fix current
linting issues in the code, in particular:

- Use strict equals operators (=== and !==)
- Remove empty lifecycle methods (mostly ngOnInit)
- Output bindings including aliases should not be named as standard dom
  events (submit)
- Async pipe results should not be negated

src/app/shared/delete-dialog/delete-dialog.component.ts

@@ -10,7 +10,7 @@ import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material/dialog';
   templateUrl: './delete-dialog.component.html',
   styleUrls: ['./delete-dialog.component.scss']
 })
-export class DeleteDialogComponent implements OnInit {
+export class DeleteDialogComponent {
 
   /**
    * @param {MatDialogRef} dialogRef Component reference to dialog.
@@ -19,7 +19,4 @@ export class DeleteDialogComponent implements OnInit {
   constructor(public dialogRef: MatDialogRef<DeleteDialogComponent>,
               @Inject(MAT_DIALOG_DATA) public data: any) { }
 
-  ngOnInit() {
-  }
-
 }