anchor.diff:  nav.navbar.navbar-default.navbar-fixed-top
     .container-fluid
  -    .col-md-1
  -    .navbar-header.col-md-1
  +
  +    .navbar-header
         button.navbar-toggle.collapsed(type='button' data-toggle='collapse' data-target='#navbar-collapse')
           span.sr-only Toggle navigation
           span.icon-bar
  
positive.code:           a.navbar-brand(href='/') #{sitename}
              span.sr-only (current)
  
      #navbar-collapse.collapse.navbar-collapse.col-md-9
        ul.nav.navbar-nav
          li.dropdown
            a.dropdown-toggle(href='#' data-toggle='dropdown' role='button' aria-haspopup='true' aria-expanded='false')
  
negative.code:               a(href='#')
                  i.fa.fa-close.fa-fw
                  |  Log Out
  