Fixing redeclaration of rest framework settings

See merge request !152

Greg 98 landing page

See merge request !146

Fix idporten

See merge request !153

Remove check on emplyee status.

See merge request !151

Adding missing sorting for countries

See merge request !145

We trust the cerebrum data. There are leaders at UiO that are not
employees.

Increase test coverage

See merge request !150

If the user is neither a guest or a sponsor, generic text explaining
this is shown. If they are a guest, they are shown the data related to
them. If they are a sponsor, they are redirected to the /sponsor/ route.

Resolves: GREG-97

Greg 95 cerebrum sponsor import

See merge request !149

GREG-110: Guest cannot change name under manual registration

See merge request !148

Fix bug in signals for roles

See merge request !147

If you do .save() on a Role without changing anything the intance will
not have the _changed_fields attribute.

Add a few more role types to fixtures

See merge request !144

ID-porten support and better user matching

See merge request !135