fix: Client signature

The functionality to store and show client signatures was broken.

src/app/clients/clients-view/custom-dialogs/view-signature-dialog/view-signature-dialog.component.html

@@ -11,5 +11,5 @@
 <mat-dialog-actions align="end">
   <button mat-raised-button mat-dialog-close>{{"labels.buttons.Close" | translate}}</button>
   <button mat-raised-button *ngIf="signatureId" color="warn" [mat-dialog-close]="{ delete: true }">{{"labels.buttons.Delete" | translate}}</button>
-  <button mat-raised-button color="primary" [mat-dialog-close]="{ upload: true }">{{ signatureId ? 'Reupload' : 'Upload'}}</button>
+  <button mat-raised-button *ngIf="!signatureId" color="primary" [mat-dialog-close]="{ upload: true }">{{"labels.buttons.Upload" | translate}}</button>
 </mat-dialog-actions>

src/app/clients/clients-view/custom-dialogs/view-signature-dialog/view-signature-dialog.component.ts

@@ -6,6 +6,9 @@ import { DomSanitizer } from '@angular/platform-browser';
 /** Custom Services */
 import { ClientsService } from 'app/clients/clients.service';
 
+/** Node Types */
+import { Buffer } from 'buffer';
+
 /**
  * View signature dialog component.
  */
@@ -39,8 +42,9 @@ export class ViewSignatureDialogComponent implements OnInit {
   ngOnInit() {
     if (this.signatureId) {
       this.clientsService.getClientSignatureImage(this.clientId, this.signatureId).subscribe(
-        (base64Image: any) => {
-          this.signatureImage = this.sanitizer.bypassSecurityTrustResourceUrl(base64Image);
+        async (blob: any) => {
+          const buffer = Buffer.from(await blob.arrayBuffer())
+          this.signatureImage = 'data:' + blob.type + ';base64,' + buffer.toString('base64');
         }, (error: any) => {}
       );
     }