Otherwise the app would crash when it tried to build template context:
Traceback (most recent call last):
[...]
File ".../zerver/context_processors.py", line 23, in add_settings
'email_gateway_example': settings.EMAIL_GATEWAY_EXAMPLE,
File "/usr/lib/python2.7/dist-packages/django/conf/__init__.py", line 55, in __getattr__
return getattr(self._wrapped, name)
AttributeError: 'Settings' object has no attribute 'EMAIL_GATEWAY_EXAMPLE'
(imported from commit 6cc5d3f150326a55230ea91e6c228ae9b1e19df3)
50e8d8b69a