Commit broke /admin/ endpoint

[viktorsmari]

Git bisect tells me that this commit 388fecf broke the /admin:

Commit message:
CustomTermsAndConditionsRedirectMiddleware replaced with one from django-termsandconditions package, since they have now implemented the changes we needed.

Error:

UnicodeDecodeError at /admin/
'ascii' codec can't decode byte 0xc3 in position 13: ordinal not in range(128)

I think we need to add simple tests, that simply check multiple endpoints like /login /admin /issues etc, just to ensure they are working and not erroring.

That way, we won't notice 'by accident' if something random broke.