anchor.diff:  
     <% if current_user %>
         <ul class="nav navbar-nav navbar-right">
  -        <li><%= link_to "My List", "/mylist" %></li>
  +        <li>
  +        <%= link_to "/mylist" do %>
  +          <i class="fa fa-list-alt fa-2x"></i> 
  +        <% end %>
  +        </li>
           <li class="dropdown">
           <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"><%="#{current_user.first_name} " %><img src="<%= current_user.user_img_url%>" height="25"><span class="caret"></span></a>
             <ul class="dropdown-menu" role="menu">
  
positive.code:       <ul class="nav navbar-nav navbar-right">
  
  <li>        <%= link_to "/auth/facebook" do %>
                  Login with <%= fa_icon 'facebook-official' %>
              <% end %></li>
  
          </li>
  
negative.code:     <!-- Collect the nav links, forms, and other content for toggling -->
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
          <li class="active"><a href="/"><i class="fa fa-bitbucket fa-2x"></i> Bucketlist<span class="sr-only">(current)</span></a></li>
          <li class="active">
          <a href="/users"><i class="fa fa-users fa-2x"></i><span class="sr-only">(current)</span></a>
          </li>
          <% if current_user && current_user.name != "guest" %>
                  <li class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"><i class="fa fa-envelope fa-2x"></i> [<%= current_user ? unread_messages_count : 0 %>] <span class="caret"></span></a>
            <ul class="dropdown-menu" role="menu">
              <li><a href="/conversations/new">New Message</a></li>
              <li><a href="/mailbox/inbox">Mailbox</a></li>
  