added en-GB language

src-ui/src/app/app.module.ts

@@ -64,10 +64,12 @@ import { CustomDatePipe } from './pipes/custom-date.pipe';
 import localeFr from '@angular/common/locales/fr';
 import localeNl from '@angular/common/locales/nl';
 import localeDe from '@angular/common/locales/de';
+import localeEnGb from '@angular/common/locales/en-GB';
 
 registerLocaleData(localeFr)
 registerLocaleData(localeNl)
 registerLocaleData(localeDe)
+registerLocaleData(localeEnGb)
 
 @NgModule({
   declarations: [

src-ui/src/app/components/manage/settings/settings.component.html

@@ -167,7 +167,7 @@
     </li>
   </ul>
 
-  <div [ngbNavOutlet]="nav" class="border-left border-right border-bottom p-3 mb-3 shadow"></div>
+  <div [ngbNavOutlet]="nav" class="border-left border-right border-bottom p-3 mb-3 shadow-sm"></div>
 
   <button type="submit" class="btn btn-primary" i18n>Save</button>
 </form>

src-ui/src/app/services/settings.service.ts

@@ -80,6 +80,7 @@ export class SettingsService {
   getLanguageOptions(): LanguageOption[] {
     return [
       {code: "en-US", name: $localize`English (US)`, englishName: "English (US)"},
+      {code: "en-GB", name: $localize`English (GB)`, englishName: "English (GB)"},
       {code: "de", name: $localize`German`, englishName: "German"},
       {code: "nl", name: $localize`Dutch`, englishName: "Dutch"},
       {code: "fr", name: $localize`French`, englishName: "French"}