fixed admin, html template

pylons_app/templates/admin/admin.html

@@ -13,7 +13,7 b''
 </%def>
 <%def name="main()">
     <div>
-        <h2>Welcome ${c.admin_username}</h2>
+        <h2>Welcome ${c.hg_app_user.username}</h2>
 		    <div id="user_log">
 				${c.log_data}
 			</div>