Fixed issue relating to showdownjs not escaping html tags by porting to

markdown-it, also introduced a new function: func.render_md

views/posts/tag.ejs

@@ -1,7 +1,7 @@
 <h3>
     <%= post.title %>
 </h3>
-<%- converter.makeHtml(post.content) %><br/>
+<%- func.render_md(post.content) %><br/>
 <a href="/post/<%- postID %>"><%= locale.permalink %></a><br/>
 <%- func.hyperlink_tags(post.tags) %>
 <br/>