Prevent setting automatic member payment fees to true without an IBAN.

Closes #452

See merge request !587

Fix profile save

See merge request !610

Use the User model for foreign keys.

See merge request !606

Resize profile images on upload

Closes #529

See merge request !608

Remove confusing 'cancel' button from registration info fields page

Closes #525

See merge request !603

Fix info fields in events API registrations

See merge request !601

Fix events table values in admin

See merge request !598

Fix context given to baseurl templatetag in events emails.py

See merge request !600

Update django-rest-framework to 3.7

See merge request !596

In particular, this resolves the template error wrt crispyforms
when deploying.

Translation is now with capital letters and the event export displays payment method correct.

See merge request !597

payment method correct.

Add part about committee promotion to styleguide

See merge request !584

Fix returning member pk instead of user pk

See merge request !594

Close photos after hashing their contents

See merge request !592

Drop deprecation feed

See merge request !593

When uploading photos, photos were not closed after hashing their contents. A context manager which
automatically closes the files would have been nicer, but Django does not allow it.

Only show active partners in API

See merge request !591

Add push notifications system

Closes #517

See merge request !552

Previously inactive partners were shown in the API. As the Serializer does not include the is_active
field there was no tell whether a partner was active or not. Now the API only returns active partners.

Add API endpoint for partner events

See merge request !589

Replace site-logo-en.png

See merge request !590