Introducing attachments fixes for blog posts and assets.

Requires migration of attachments schema using
python manage.py maintenance upgrade_attachment_schema --all

src/templates/nodes/custom/comment/list_embed.jade

@@ -77,7 +77,6 @@
 		| {% endif %}
 
 | {% block comment_scripts %}
-script(src="{{ url_for('static_pillar', filename='assets/js/markdown.min.js', v=171020161) }}")
 script.
 
 	// Markdown initialization