Added SSL encryption to issue tracker configuration

modules/trac/templates/site.erb

 server {
   server_name <%= @domain %>;
+
   <% if is_default %>
     listen 80 default_server;
     listen [::]:80 default_server;
   <% else %>
     listen 80;
     listen [::]:80;
   <% end %>
 
+  location / {
+    rewrite (.*) https://$host$1 permanent;
+  }
+}
+
+server {
+  server_name <%= @domain %>;
+
+  <% if is_default %>
+    listen 443 ssl default_server;
+    listen [::]:443 ssl default_server;
+  <% else %>
+    listen 443 ssl;
+    listen [::]:443 ssl;
+  <% end %>
+
+  ssl_certificate adblockplus.org_sslcert.pem;
+  ssl_certificate_key adblockplus.org_sslcert.key;
+
+  add_header Strict-Transport-Security max-age=31536000;
+
   location /
   {
     set $path_info $request_uri;
     if ($path_info ~ "(.*?)\?")
     {
       set $path_info $1;
     }
 
     fastcgi_pass unix:/tmp/trac-fastcgi.sock;
     include /etc/nginx/fastcgi_params;
     fastcgi_param SCRIPT_NAME "";
     fastcgi_param PATH_INFO $path_info;
   }
 
   location /chrome/
   {
     alias /home/trac/htdocs/htdocs/;
   }
 }