Prettied, Linted and updated angular.json according to the latest schematic of Angular CLI.

Now all that is needed is to make it ready for strict compiling.
Removed eslint-plugin-prettier as it is not recommended and causes errors for both eslint and prettier

Bumped to v8.0.0

overlord/src/app/payment/payment-dialog.component.ts

@@ -1,12 +1,13 @@
 import { Component, Inject, OnInit } from '@angular/core';
+import { FormBuilder, FormGroup } from '@angular/forms';
 import { MatAutocompleteSelectedEvent } from '@angular/material/autocomplete';
 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
-import { FormBuilder, FormGroup } from '@angular/forms';
-import { debounceTime, distinctUntilChanged, map, startWith, switchMap } from 'rxjs/operators';
 import { Observable, of as observableOf } from 'rxjs';
-import { MathService } from '../shared/math.service';
+import { debounceTime, distinctUntilChanged, map, startWith, switchMap } from 'rxjs/operators';
+
 import { Account } from '../core/account';
 import { AccountService } from '../core/account.service';
+import { MathService } from '../shared/math.service';
 
 @Component({
   selector: 'app-payment-dialog',
@@ -57,7 +58,7 @@ export class PaymentDialogComponent implements OnInit {
     );
   }
 
-  displayAccount(account?: Account): string | undefined {
+  displayFn(account?: Account): string | undefined {
     return account ? account.name : undefined;
   }