{{#if userAdmin}}
    <li><a href="{{adminUrl}}">{{i18n "Administration"}}</a></li>
{{/if}}

{{#if userAdmin}} //Here the context is not available within the buttons.hbs
   <input type='submit' class='actionbuttons' id='newMessageButton' name='{{properties.replyURL}}' value='{{i18n "+ New Message"}}' />
{{/if}}