<div class="row" id="tabs-container">
  <ul class="tabs" data-tab>
    <li class="tab-title"><a href="#listings-new"><i class="fa fa-plus fa-lg"></i> New Listing</a></li>
    <li class="tab-title"><a href="#listings-index">View All Listings</a></li>
    <li class="tab-title"><a href="#listings-donation-history">My Donations</a></li>
    <li class="tab-title"><a href="#listings-request-history">My Requests</a></li>
  </ul>
</div>

<% if current_user %>
<div class="row" id="tabs-container">
  <ul class="tabs" data-tab>
    <li class="tab-title">
        <%= link_to new_listing_path do %>

        <!-- Prefix 'New Listing' with Font Awesome plus-sign icon -->
        <%= content_tag(:i, "", :class => "fa fa-plus fa-lg") %>
        New Listing
        <% end %>
    </li>
    <li class="tab-title">
        <%= link_to "View All Listings", listings_path %>
    </li>
    <li class="tab-title">
        <%= link_to "My Donations", user_donations_path(current_user) %>
    </li>
    <li class="tab-title">
        <%= link_to "My Requests", user_requests_path(current_user) %>
    </li>
  </ul>
</div>
<% end %>

Replace stubs in Listing nav menu with live data
Replace stubs in Listing nav menu with live data

 - Link navigation tabs to Listing controller actions
 - Hide nav menu from guest users, default to seeing only Listing#index
 - Add Font Awesome plus-sign icon to New Listing tab to differentiate clear call to action from review tabs
