set new .Allowed flag

Signed-off-by: Anirudh Oppiliappan <[e-mail]>

templates/index.html

···
         <ul class="px-0">
             {{ $posts := .Extra.blog }}
             {{ range $posts }}
+            {{ if .Allowed }}
                 <li class="mt-5 bg-white dark:bg-gray-800 py-4 px-6 rounded drop-shadow-sm list-none">
                   {{ $dateStr := .Meta.date }}
                   {{ $date := parsedate $dateStr }}
···
                     <p class="italic mt-1 mb-0">{{ .Meta.subtitle }}</p>
                   </div>
                 </li>
+            {{ end }}
             {{ end }}
           </ul>
       </section>