sugar_template_utils: allow set_context to set global variables
sugar_template_utils: allow set_context to set global variables

Normally set_context only operates on the current template context stack level
(i.e. the current block). This patch allows you to use something like:

{% set_context global foo="bar" %}

to affect the entire context stack, which can lead to madness if done unwisely.

acdha/django-sugar