message: indexes for sweeper destination dropdown
diff: <label class="uk-form-label" for="destination-account">Local Destination<span uk-icon="icon: info;" uk-tooltip title="Local accounts that can be used as destination for the swept funds. Make sure you are able to unlock your Nault wallet."></span></label>
  <div class="uk-form-controls">
  <select class="uk-select" id="destination-account" [(ngModel)]="myAccountModel" (change)="setDestination(myAccountModel)">
  - <option *ngFor="let account of accounts" [value]="account.id">{{ account.addressBookName ? account.addressBookName + ' - ' : '' }} {{ account.id }}</option>
  + <option *ngFor="let account of accounts" [value]="account.id">{{account.addressBookName ? account.addressBookName + ' - ' : '#' + account.index + ' - ' }} {{ account.id | squeeze }} ({{ account.balance | rai: settings.settings.displayDenomination }})</option>
  <option [value]="0">Custom Destination</option>
  </select>
  </div>
  