!!!
%html
  %head
    %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}/
    %title SmsPager
    = stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true
    = javascript_include_tag 'application', 'data-turbolinks-track' => true
    = csrf_meta_tags
    = yield :custom_head
  %body
    = render partial: 'layouts/alerts'
    = render partial: 'layouts/navigation'
    = render partial: 'sub_nav' if lookup_context.find_all('sub_nav').any?
    = yield
    = render partial: 'layouts/footer'
    = yield :modals
    = yield :custom_scripts