Upgrading to Angular 20:

Replaced checked in package-lock.json by regenerated one.
Ran ng update @angular/core@20 @angular/cli@20
Ran npm install @angular-builders/jest@^20.0.0 @fortawesome/angular-fontawesome@^3.0.0 @swimlane/ngx-graph@^11
Ran npm install ngx-mat-select-search@^8.0.2.
Ran ng update @angular/material@20.
Updated all eslint and typescript to the latest versions.
Removed @angular-devkit/schematics.
Updated fontawesome.
Updated rxjs and tslib.
Moved required node version from 16 to 20.
Updated jest-preset-angular.
Set preserveWhitespaces to false.
Corrected two type declarations in two typescript files to make ng serve run without errors.
Removed unused angular-devkit/schematics from view-user.component.ts .
Updated list of supported browsers.
Upgraded prettier.
Ran prettier . --write the first time.
Ran prettier . --write the second time.
Ran ng generate @angular/core:inject with defaults, excepted a handful of files.
Fixed remaining eslint problems.
Added dist directory to ignores in eslint.config.js.
Let prettier fix formatting, almost everything is just line breaks.
Made htmlhint ignore @if and @for Angular constructs.
Updated node version in Github workflow to 22.12.0 (build.yml).
Updated .env.ts.
Updated Angular datetime format strings from YYYY-MM-DD to yyyy-MM-dd.
Merged changes from dev into angular20 branch.

src/app/shared/accounting/gl-account-display/gl-account-display.component.html

@@ -1,13 +1,16 @@
-<span class="layout-row" *ngIf="accountTitle">
-  <div [ngClass]="getWithClass(withTitle)" class="header">
-    {{ 'labels.inputs.' + accountTitle | translate }}
-  </div>
+@if (accountTitle) {
+  <span class="layout-row">
+    <div [ngClass]="getWithClass(withTitle)" class="header">
+      {{ 'labels.inputs.' + accountTitle | translate }}
+    </div>
+    <div [ngClass]="getWithClass(withAccount)">
+      {{ glAccountValue() }}
+    </div>
+  </span>
+}
 
-  <div [ngClass]="getWithClass(withAccount)">
+@if (!accountTitle) {
+  <div class="flex-100">
     {{ glAccountValue() }}
   </div>
-</span>
-
-<div class="flex-100" *ngIf="!accountTitle">
-  {{ glAccountValue() }}
-</div>
+}