improves table layout on admin polls index

app/views/admin/poll/polls/_poll.html.erb

@@ -7,7 +7,7 @@
   <td>
     <%= l poll.starts_at.to_date %> - <%= l poll.ends_at.to_date %>
   </td>
-  <td class="text-right">
+  <td>
     <%= link_to t("admin.actions.edit"),
                 edit_admin_poll_path(poll),
                 class: "button hollow" %>

app/views/admin/poll/polls/index.html.erb

@@ -5,11 +5,11 @@
             class: "button success float-right" %>
 
 <% if @polls.any? %>
-  <table>
+  <table class="fixed">
     <thead>
       <th><%= t("admin.polls.index.name") %></th>
       <th><%= t("admin.polls.index.dates") %></th>
-      <th>&nbsp;</th>
+      <th><%= t("admin.actions.actions") %></th>
     </thead>
     <tbody>
       <%= render @polls %>