message: add missing Material-Design Button
diff: @@ -6,11 +6,14 @@ import {LegalnoticeComponent} from './legalnotice/legalnotice.component';
  import {PrivacyComponent} from './privacynotice/privacy.component';
  import {CookieBannerComponent} from './cookie-banner/cookie-banner.component';
  import {TitleService} from '../shared/services/title.service';
  +import {MaterialImportModule} from '../shared/modules/material-import.module';
  +import {MatButtonModule} from '@angular/material';
  @NgModule({
  imports: [
  CommonModule,
  - TranslateModule
  + TranslateModule,
  + MatButtonModule
  ],
  declarations: [
  LegalnoticeComponent,
  