List users who haven't voted

Closes #3

views/votes_show_closed.erb

@@ -175,7 +175,7 @@
       <% end %>
     </tr>
   </thead>
-  <% @vote.ratings.collect { |rating| rating.user }.uniq.sort_by { |user| user.email }.each do |user| %>
+  <% all_users_sorted.each do |user| %>
   <tr>
     <td><%= user.email %></td>
     <% @vote.candidates.each do |candidate| %>
@@ -183,6 +183,10 @@
         <td class="h5">
           <%= erb :rating_badge, :locals => { :value => settings.values.select { |e| e[:id] == rating.value }.first } %>
         </td>
+      <% else %>
+        <td class="h5">
+          <span class="badge bg-secondary"><%= _("Not voted") %></span>
+        </td>
       <% end %>
     <% end %>
   </tr>

views/votes_show_open.erb

@@ -66,8 +66,16 @@
 <h2 class="mb-4"><%= _("Participants") + " (#{@vote.ratings.collect { |rating| rating.user }.uniq.count})" %></h2>
 
 <ul class="mb-5">
-<% @vote.ratings.collect { |rating| rating.user }.uniq.sort_by { |user| user.email }.each do |user| %>
-  <li><%= user.email %></li>
+  <% all_users_sorted.each do |user| %>
+    <li>
+      <% if @vote.ratings.collect { |rating| rating.user }.include?(user) %>
+        <span>
+      <% else %>
+        <span class="text-decoration-line-through">
+      <% end %>
+      <%= user.email %>
+      </span>
+    </li>
   <% end %>
 </ul>