message: fixed sort icon according to virginie's comment
diff: @@ -38,8 +38,8 @@ import { isFunction } from '../common';
  <button class="btn glyphicon glyphicon-remove btn-primary" (click)="settings.columns.clearFilter(map)"></button>
  </div>
  - <span class="glyphicon glyphicon-chevron-down pull-right" *ngIf="settings.sortedAscending(map.column)"></span>
  - <span class="glyphicon glyphicon-chevron-up pull-right" *ngIf="settings.sortedDescending(map.column)"></span>
  + <span class="glyphicon glyphicon-chevron-up pull-right" *ngIf="settings.sortedAscending(map.column)"></span>
  + <span class="glyphicon glyphicon-chevron-down pull-right" *ngIf="settings.sortedDescending(map.column)"></span>
  <column-designer [settings]="settings.columns" [map]="map"></column-designer>
  