anchor.diff:                  <%=
                     link_to 'Vote',
                       cast_vote_path(votable),
  -                    class: "btn btn-primary blue #{'disabled' if free_votes.zero?}"
  +                    class: "btn btn-primary blue #{'disabled' if !user_signed_in? || free_votes.zero?}"
                   %>
  -                <% if free_votes.zero? %>
  +                <% if user_signed_in? && free_votes.zero? %>
                     </span>
                   <% end %>
                   <br />
  
positive.code: <div class="row">
  
    <%
      total_votes = current_user.votes.count
      free_votes  = current_user.votes.where(votable_id: nil).count
      cast_votes  = current_user.votes.where.not(votable_id: nil).count
  
      disabled_voting_message = if cast_votes > 0
        "You'll get an additional vote for every friend you refer that signs up for Premium."
      else
        "You'll get your first vote when you sign up for a Premium account."
      end
    %>
  
    <% Votable.all.each do |votable| %>
      <div class="col s6">
        <div class="hoverable card">
          <div class="card-content">
            <div class="row">
              <div class="col s4">
                <div class="center"><i class="material-icons blue-text" style="font-size: 55px;"><%= votable.icon %></i></div>
                <h5 class="center"><%= votable.name %></h5>
                <p class="center">
                  <% if free_votes.zero? %>
                    <span class="tooltipped"
                          data-delay="100"
                          data-tooltip="<%= disabled_voting_message %>">
  
negative.code:                 <%= pluralize votable.votes.count, 'vote' %>
                </p>
              </div>
              <div class="col s12 m8">
                <div class="spaced-paragraphs">
                  <%= votable.description.html_safe %>
                </div>
                <% if user_signed_in? && cast_votes > 0 %>
                  <p class="grey-text center" style="margin-top: 30px;">
                    You've voted for this feature <%= pluralize current_user.votes.where(votable: votable).count, 'time' %>.
                  </p>
  