title: ng-show and ng-hide doesn't work in chrome extension
body: <p>I made a little chrome extension with angularjs and bootstrap. I have a alert like this:</p>
  
  <pre><code>&lt;div class="alert alert-danger" role="alert" ng-show="errorMailZR"&gt;error&lt;/div&gt;
  </code></pre>
  
  <p>and in angularjs controller :</p>
  
  <pre><code>$scope.errorMailZR = false;
  </code></pre>
  
  <p>i put it to false because i see the alert by default, it's not hidden :/ but in single web page when i go on it with browser, everything is ok. So, what i need for it's works in chrome extension ?</p>
  
  <p>ng-show="false" doesn't work too in chrome extension...</p>