title: Ionic has-header + ionic-side-menus not working
body: <p>Hey everyone I've been running into some issues with the header and scrolling on the side menus.</p>
  
  <p>Although I've taken it out from this snippet, i've tried putting class/attr has-header in just about every possible combination:</p>
  
  <pre><code>&lt;ion-side-menus&gt;
  
    &lt;ion-side-menu-content&gt;
  
      &lt;ion-header-bar class="bar-dark"&gt;
        &lt;button class="button icon ion-arrow-left-a" ng-click='back()'&gt;&lt;/button&gt;
        &lt;h1 class="title"&gt;Ionic Shopping Checkout&lt;/h1&gt;
        &lt;button class='button icon ion-bag' ng-click='toggleRightSideMenu()'&gt;&lt;/button&gt;
      &lt;/ion-header-bar&gt;
  
      &lt;ion-purchase&gt;&lt;/ion-purchase&gt; // custom directive
  
      &lt;ion-purchase-footer&gt;&lt;/ion-purchase-footer&gt; // custom directive
  
    &lt;/ion-side-menu-content&gt;
  
    &lt;ion-side-menu side="right"&gt;
      &lt;ion-cart has-header='true' ng-controller='CartController'&gt;&lt;/ion-cart&gt; // custom directive
    &lt;/ion-side-menu&gt;
  
  &lt;/ion-side-menus&gt;
  </code></pre>
  
  <p>Additionally, my ng-repeat of items in the side menu isn't scrolling, even when I nest them in an ion-scroll element. This is likely a completely unrelated issue, however I'm curious if anyone has come across that issue too.</p>
  
  <p>Thanks for all the help in advance!</p>