Fixed draft alert to use quarter instead of git branch

_layouts/default.html

@@ -13,7 +13,7 @@
 
     {% if page.warning != none %}
     <div id="unpublished-warning">
-      This is the {{site.git_branch}} {{site.status}} website. 
+      This is the {{site.quarter}} {{site.status}} website. 
     </div>
     {% endif %}