Bugfix/disable language selector for demo user (#1204)

* Disable language selector for demo user

* Update changelog

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Moved the build pipeline from _Travis_ to _GitHub Actions_
 
+### Fixed
+
+- Disabled the language selector for the demo user
+
 ## 1.184.2 - 28.08.2022
 
 ### Added

apps/client/src/app/pages/account/account-page.html

@@ -119,6 +119,7 @@
                   <mat-form-field appearance="outline" class="w-100">
                     <mat-select
                       name="language"
+                      [disabled]="!hasPermissionToUpdateUserSettings"
                       [value]="language"
                       (selectionChange)="onChangeUserSetting('language', $event.value)"
                     >