Allow removing invalid Ghostfolio API key

apps/client/src/app/components/admin-settings/admin-settings.component.ts

@@ -81,6 +81,7 @@ export class GfAdminSettingsComponent implements OnInit {
     'actions'
   ];
   public ghostfolioApiStatus: DataProviderGhostfolioStatusResponse;
+  public hasGhostfolioApiKey: boolean;
   public isGhostfolioApiKeyValid: boolean;
   public isLoading = false;
   public readonly premiumDataProviderMailHref = `mailto:hi@ghostfol.io?subject=Ghostfolio Premium Data Provider&body=${[
@@ -184,6 +185,8 @@ export class GfAdminSettingsComponent implements OnInit {
           PROPERTY_API_KEY_GHOSTFOLIO
         ] as string;
 
+        this.hasGhostfolioApiKey = !!ghostfolioApiKey;
+
         if (ghostfolioApiKey) {
           this.adminService
             .fetchGhostfolioDataProviderStatus(ghostfolioApiKey)