Introducing Pillar Framework

Refactor of pillar-server and pillar-web into a single python package. This
simplifies the overall architecture of pillar applications.

Special thanks @sybren and @venomgfx

src/templates/errors/403.jade

@@ -0,0 +1,4 @@
+| {% extends "errors/layout.html" %}
+| {% block body %}
+| {% include "errors/403_embed.html" %}
+| {% endblock %}