<!DOCTYPE html>

<html lang="<%= I18n.locale %>">

<head>
  <%= render 'admin/shared/head' %>
</head>

<body class="<%= body_class %>">

  <div class="container-fluid">

    <div class="navbar">
      <div class="navbar-inner">
        <div class="container">
          <div class="brand"><%= admin_title %></div>
          <%= render "helpers/admin/base/apps" %>
          <%= render "helpers/admin/base/login_info" %>
        </div>
      </div>
    </div>

    <div class="row-fluid">
      <% if controller.controller_name.eql?('dashboard') %>
        <%= yield %>
      <% else %>
        <div class="span3">
          <%= build_sidebar %>
        </div>
        <div class="span9">
          <%= yield :main_grid %>
        </div>
      <% end %>
    </div>

  </div>

</body>

</html>

<!DOCTYPE html>

<html lang="<%= I18n.locale %>">

<head>
  <%= render 'admin/shared/head' %>
</head>

<body class="<%= body_class %>">

  <div class="container-fluid">

    <div class="navbar">
      <div class="navbar-inner">
        <div class="container">
          <div class="brand"><%= admin_title %></div>
          <%= render "helpers/admin/base/apps" %>
          <%= render "helpers/admin/base/login_info" %>
        </div>
      </div>
    </div>

    <div class="row-fluid">
      <% if controller.controller_name.eql?('dashboard') %>
        <%= yield %>
      <% else %>
        <div class="span2">
          <%= build_sidebar %>
        </div>
        <div class="span10">
          <%= yield :main_grid %>
        </div>
      <% end %>
    </div>

  </div>

</body>

</html>

Make left sidebar smaller / main area bigger
Make left sidebar smaller / main area bigger
