Django 1.9 template render warning fix

[antwan]

This PR fixes a Django 1.9 warning when rendering template using a RequestContext instead of a dict.
As per the [deprecation plan](https://docs.djangoproject.com/en/1.9/_modules/django/template/backends/django/|deprecation plan) since 1.8, it is recommanded to send a dictionnary context instead of a Context or RequestContext object when rendering templates. A warning is raised on Django 1.9, but it won't (immediately) break on Django 1.10 thus making a future error silent.

Tested with Django 1.5 to 1.10.

[coveralls]

Coverage remained the same at 100.0% when pulling da3766c on Antwan86:master into 6ff5563 on prymitive:master.

[prymitive]

Thanks for the patch, it does pass all tests but it overrides context object and I'm not 100% sure it wouldn't break anything. My concern is that context might have additional keys used for template rendering as so replacing it with a static 2 element dict will make those keys unavailable. A safer approach would be to convert context object to a dict and inject breadcrumb keys. Please take a look at f2e6b17 and if that works for you update this PR. Thanks again.

[antwan]

Given the templates used, even if the context had additional keys (it's actually empty), they wouldn't be used anyway.

I'll update the PR though.

[prymitive]

Fixed in 17b8879