Show native head panel for logged-in users at public area

app/views/layouts/public.html.haml

@@ -2,6 +2,9 @@
 %html{ lang: "en"}
   = render "layouts/head", title: "Public Projects"
   %body{class: "#{app_theme} application"}
+    - if current_user
+      = render "layouts/head_panel", title: "Public Projects"
+    - else
       %header.navbar.navbar-static-top.navbar-gitlab
         .navbar-inner
           .container
@@ -11,6 +14,7 @@
                 %h1 GITLAB
               %span.separator
             %h1.project_name Public Projects
+
     .container.navless-container
       .content
         = yield