Initial tags implementation

templates/post.html

@@ -3,5 +3,10 @@
     <p class="subtitle">$date$</p>
     <section>
         $body$
-        </section>
+    </section>
+    <section>
+        $if(tags)$
+        <br>Posted in <i>$tags$</i>
+        $endif$
+    </section>
 </article>