Properly render context in Django error views

[matthew-li]

When a view returns one of the status codes (400, 403, 404, 500), a default Django error view is invoked, but these views (with the exception of 404) do not include context variables provided by TEMPLATES['OPTIONS']['context_processors'].

As a result, the names of the portal and program (provided by the context processor portal_and_program_names) are not included in the title or at the top of the page (see coldfront.templates.XXX.html).

Option 1: Customize the views to include at least these pieces of context. This would likely involve copying a lot of the original view code.
Option 2: Pre-generate the XXX.html files (e.g., in Ansible) to have the name hard-coded. However, these templates extend the base template and load static content, so this may not be feasible.

Note that DEBUG must be False to test this.