Merge branch 'allauth' ...

Use django-allauth for authentication.

Fix minor pep8 violation (unused variable).

Merge branch 'master' into 'master' ...

Don't strip trailing whitespace from subject_prefix.

Fixes #145 

This will also not strip leading whitespace, but I think that's OK

See merge request !162

Display the list info on the summary page

Domain.base_url is deprecated

Add icons to the nav bar

Remove obsolete functions

Drop AddressConfirmationProfile, allauth does that now

Fix PEP8 errors

Remove empty dir

Update tapes

Fix HyperKitty detection

A form was moved to a different page, update tests

Fix tests

Use unicode

Fix tapes

Create an AppConfig

Adapt to Mailman API 3.1

View name changed

Adapt to Mailman commit bc3c3256

Create EmailAddress instances in the tests

Improve display of error messages in tests

Profile and address activation have been moved to django_mailman3

Make the profile link a little nicer

Make a nice user profile

Use EmailAddress instead of set_other_emails

Use django-mailman3's paginator

Namespace the user profile view name

Use the django_mailman3 context processor

Use the same template block names as hyperkitty and allauth