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.html

@@ -26,8 +26,8 @@
       <mat-autocomplete
         #auto="matAutocomplete"
         autoActiveFirstOption
-        [displayWith]="displayAccount"
         (optionSelected)="accountSelected($event)"
+        [displayWith]="displayFn"
       >
         <mat-option *ngFor="let account of accounts | async" [value]="account">{{
           account.name