Align multiple header buttons correctly (4.4)

Android doesn't render multiple buttons in the `ion-nav-bar` or `ion-header-bar` correctly. The browser overrides the display property. 

On Android 4.4:
<img src="http://forum.ionicframework.com//uploads/default/695/9bd823af5d800f95.png" > 
<br><br>
On Android 4.3 it is not happening:
<img src="http://forum.ionicframework.com//uploads/default/696/4bfd99c5cf2b9575.png">