Display vote name even when unauthenticated

For example, when sharing the link in messaging apps.

vedia.rb

@@ -317,10 +317,12 @@ post '/votes/new' do
 end
 
 get '/votes/:id' do
-  require_login
   find_vote
   if not @vote
     erb :votes_show_unknown
+  else
+    if not current_user
+      erb :votes_show_unauthenticated
     else
       case @vote.state
       when 'draft'
@@ -335,6 +337,7 @@ get '/votes/:id' do
         erb :votes_show_closed
       end
     end
+  end
 end
 
 get '/votes/:id/edit' do

views/layout.erb

@@ -46,6 +46,8 @@
       <div class="d-flex flex-wrap justify-content-end pe-3 py-3 mb-4">
         <% if current_user %>
           <%= current_user.email %>
+        <% else %>
+          &nbsp;
         <% end %>
       </div>
 

views/votes_show_unauthenticated.erb

@@ -0,0 +1,17 @@
+<div class="mb-5">
+  <h1><%= @vote.title %></h1>
+</div>
+
+<p class="alert alert-warning mb-4"><%= _("You need to log in to see the details of this vote.") %></p>
+
+<form action="/login" method="post" class="mb-5">
+  <div class="mb-3">
+    <label for="email" class="form-label"><%= _("Email") %></label>
+    <input type="text" name="email" class="form-control">
+  </div>
+  <div class="mb-3">
+    <label for="password" class="form-label"><%= _("Password") %></label>
+    <input type="password" name="password" class="form-control">
+  </div>
+  <button type="submit" class="btn btn-primary"><%= _("Login") %></button>
+</form>