Make email not allowed to be blank on agreements when all agreements have an email

[dakaza98]

The agreement model has an email field that has blank=True. This is because when this system was created, emails were not collected so not all agreements have emails. When all agreements have an email this should be removed so that email is required.

When this is changed, the email field in the AgreementForm in forms.py can be removed

Ask the klubbmästare if all the old agreements in their folder in their desk have been removed and check in the admin pages on the production server if all users have an attached agreement