markdown optimization, few other changes

app/views/blogposts/index.atom.builder

@@ -11,7 +11,7 @@ atom_feed do |feed|
       end
       entry.url blogpost_url(post)
       entry.title post.title
-      entry.content Sanitize.clean(render_md(post.content), Sanitize::Config::RELAXED).html_safe, :type => 'html'
+      entry.content render_md(post.content).html_safe, :type => 'html'
     end
   end
 end

app/views/blogposts/index.html.erb

@@ -13,7 +13,7 @@
       <div class="items">
         <div class="item content post">
           <h2 class="headline"><%= link_to truncate(p.title, length: 60, omission: " …"), p %></h2>
-          <%= Sanitize.clean(render_md(p.content), Sanitize::Config::RELAXED).html_safe %>
+          <%= render_md(p.content).html_safe %>
         </div>
       </div>
     </div>

app/views/blogposts/show.html.erb

@@ -8,7 +8,7 @@
   <div class="items">
     <div class="item content">
       <h2 class="headline"><%= link_to truncate(@post.title, length: 60, omission: " …"), p %></h2>
-      <%= Sanitize.clean(render_md(@post.content), Sanitize::Config::RELAXED).html_safe %>
+      <%= render_md(@post.content).html_safe %>
     </div>
   </div>
 </div>