locale + darktheme support, fixes boolean profilefield

src/app/services/i18n.service.ts

@@ -8,7 +8,7 @@ import {environment} from '../../environments/environment';
 export class I18nService {
 
     locale: string = "de-informal";
-    locales: any = ["de-informal"];
+    locales: any[] = ["de-informal"];
     i18n: any;
 
     constructor(private http: HttpClient) {
@@ -42,7 +42,9 @@ export class I18nService {
         }
 
         try {
-            this.locales = await this.http.get(environment.apiUrl + "/i18n").toPromise();
+            await this.http.get(environment.apiUrl + "/i18n").toPromise().then((response: any) => {
+                this.locales = response;
+            });
         } catch(e) {
             console.debug("fallback to default locales");
         }