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/receipt/receipt.component.html

@@ -72,7 +72,7 @@
         <mat-autocomplete
           #auto="matAutocomplete"
           autoActiveFirstOption
-          [displayWith]="displayAccount"
+          [displayWith]="displayFn"
           (optionSelected)="accountSelected($event)"
         >
           <mat-option *ngFor="let account of accounts | async" [value]="account">{{
@@ -128,7 +128,6 @@
         <mat-label>Narration</mat-label>
         <textarea
           matInput
-          matTextareaAutosize
           matAutosizeMinRows="5"
           placeholder="Narration"
           formControlName="narration"
@@ -153,7 +152,7 @@
             multiple
             accept="image/*"
             style="display: none"
-            (change)="detectFiles($event)"
+            (change)="image.detectFiles($event, voucher)"
           />
         </div>
       </div>