message: custom message for offline mode
diff: <div class="status-icon">
  <span class="uk-text-danger" uk-icon="icon: warning; ratio: 1.2;"></span>
  </div>
  - <div class="status-labels">
  + <div class="status-labels" *ngIf="settings.settings.serverAPI">
  <div class="label primary uk-text-danger">Unable to connect to the server</div>
  <div class="label secondary"><a (click)="retryConnection()">Refresh</a> or <a routerLink="/configure-app">select a different server</a></div>
  </div>
  + <div class="status-labels" *ngIf="!settings.settings.serverAPI">
  + <div class="label primary uk-text-danger">Wallet is in offline mode</div>
  + <div class="label secondary"><a routerLink="/configure-app">Select a server</a> to interact with the network</div>
  + </div>
  </div>
  <app-change-rep-widget *ngIf="(node.status === true) && isConfigured()"></app-change-rep-widget>
  