app/views/layouts/admin/_header.html.erb
<header>
<div class="site-name">
<h1>
<%= link_to("Pages", "/admin", class: "logo") %>
<%= PagesCore.config :site_name %>
</h1>
</div>
<% if logged_in? %>
<div class="user">
Hello, <%= link_to(current_user.name, admin_user_url(current_user)) %>
<%= link_to("Log out", admin_session_path, method: "delete") %>
</div>
<% end %>
<nav class="tabs">
<% if logged_in? %>
<%= header_tabs(:pages) %>
<%= header_tabs(:pages_plugins) %>
<%= header_tabs(:custom) %>
<%= header_tabs(:account) %>
<% end -%>
</nav>
</header>