front__codeschool-angular-2/app/templates/directives/nw-category-item.html

<a class="sort-menu-item"
   ng-class="{'active': isActive()}"
   ng-click="makeActive()">

  <i class="icon left {{category.icon}}"></i>
  {{category.name}}
  ({{categoryCount()}})

  <i class="icon close"
     ng-if='isActive()'
     ng-click="makeInactive($event)"></i>
  </a>
 <!-- Simple Version -->

<!-- <a class="sort-menu-item" ng-class="{'active': categoryActive()}" ng-click="makeActive()">
  <i class="icon left {{category.icon}}"></i> {{category.name}}
</a> -->