Now developing on Ubuntu 12.04 with Python 2.7. Use symbolic links for media, so add media/banners to .hgignore. I had a syntax error in banner_tags.py that only Python 2.7 caught. For local development, read database name from SECRETS.

{% load url from future %}
{% if show_button %}
<a href="{% url 'forums-edit_post' id=post.id %}"><img src="{{ STATIC_URL }}icons/page_edit.png" alt="Edit post" title="Edit post" /></a>
{% endif %}