Changed action in version conflict fixes #6

Author: mwitte

app/templates/partials/_versionConflict.hbs

@@ -10,7 +10,7 @@
                     Server depends EmberChat <span class="label label-danger">{{EmberChat.versionServer}}</span>
                 </p>
                 <p>
-                    <a class="btn btn-success" href="#" {{action 'openHomepage'}}>
+                    <a class="btn btn-success" href="#" {{action 'openExternal' EmberChat.homepageUrl}}>
                         <i class="fa fa-download"></i> Get EmberChat {{EmberChat.versionServer}}
                     </a>
                 </p>