diff --git a/news/factories.py b/news/factories.py
index 74dcad74481d0c0de0e9dfeaabba153673a29723..a17229133a154ccd27117e135fac715a522ab54d 100644
--- a/news/factories.py
+++ b/news/factories.py
@@ -7,8 +7,8 @@ class NewsItemFactory(factory.django.DjangoModelFactory):
     class Meta:
         model = NewsItem
 
-    date = factory.Faker('date_time')
-    headline = factory.Faker('sentence', nb_words=6)
-    blurb = factory.Faker('text', max_nb_chars=200)
-    followup_link = factory.Faker('url')
+    date = factory.Faker('date_this_year')
+    headline = factory.Faker('sentence')
+    blurb = factory.Faker('paragraph', nb_sentences=8)
+    followup_link = factory.Faker('uri')
     followup_link_text = factory.Faker('sentence', nb_words=4)
diff --git a/scipost/management/commands/models.py b/scipost/management/commands/models.py
deleted file mode 100644
index 0447660e2a189556e389b610e0c5d6bc797218aa..0000000000000000000000000000000000000000
--- a/scipost/management/commands/models.py
+++ /dev/null
@@ -1,188 +0,0 @@
-import datetime
-import hashlib
-import random
-import string
-
-from django.db import models, IntegrityError
-from django.conf import settings
-from django.utils import timezone
-
-from . import constants
-from .managers import RegistrationInvitationQuerySet, CitationNotificationQuerySet
-
-from scipost.constants import TITLE_CHOICES
-
-
-class RegistrationInvitation(models.Model):
-    """
-    Invitation to particular persons for registration
-    """
-    title = models.CharField(max_length=4, choices=TITLE_CHOICES)
-    first_name = models.CharField(max_length=30)
-    last_name = models.CharField(max_length=150)
-    email = models.EmailField()
-    status = models.CharField(max_length=8, choices=constants.REGISTATION_INVITATION_STATUSES,
-                              default=constants.STATUS_DRAFT)
-
-    # Text content
-    message_style = models.CharField(max_length=1, choices=constants.INVITATION_STYLE,
-                                     default=constants.INVITATION_FORMAL)
-    personal_message = models.TextField(blank=True)
-    invited_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.SET_NULL,
-                                   blank=True, null=True, related_name='invitations_sent')
-    created_by = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='invitations_created')
-
-    # Related to objects
-    invitation_type = models.CharField(max_length=2, choices=constants.INVITATION_TYPE,
-                                       default=constants.INVITATION_CONTRIBUTOR)
-
-    # Response keys
-    invitation_key = models.CharField(max_length=40, unique=True)
-    key_expires = models.DateTimeField(default=timezone.now)
-
-    # Timestamps
-    date_sent_first = models.DateTimeField(null=True, blank=True)
-    date_sent_last = models.DateTimeField(null=True, blank=True)
-    times_sent = models.PositiveSmallIntegerField(default=0)
-    created = models.DateTimeField(auto_now_add=True)
-    modified = models.DateTimeField(auto_now=True)
-
-    objects = RegistrationInvitationQuerySet.as_manager()
-
-    class Meta:
-        ordering = ['last_name']
-
-    def __str__(self):
-        return '{} {} on {}'.format(self.first_name, self.last_name,
-                                    self.created.strftime("%Y-%m-%d"))
-
-    def save(self, *args, **kwargs):
-        self.refresh_keys(commit=False)
-        return super().save(*args, **kwargs)
-
-    def refresh_keys(self, force_new_key=False, commit=True):
-        # Generate email activation key and link
-        if not self.invitation_key or force_new_key:
-            # TODO: Replace this all by the `secrets` package available from python 3.6(!)
-            salt = ''
-            for i in range(5):
-                salt += random.choice(string.ascii_letters)
-            salt = salt.encode('utf8')
-            invitationsalt = self.last_name.encode('utf8')
-            self.invitation_key = hashlib.sha1(salt + invitationsalt).hexdigest()
-            self.key_expires = timezone.now() + datetime.timedelta(days=365)
-        if commit:
-            self.save()
-
-    def mail_sent(self, user=None):
-        """
-        Update instance fields as if a new invitation mail has been sent out.
-        """
-        if self.status == constants.STATUS_DRAFT:
-            self.status = constants.STATUS_SENT
-        if not self.date_sent_first:
-            self.date_sent_first = timezone.now()
-        self.date_sent_last = timezone.now()
-        self.invited_by = user or self.created_by
-        self.times_sent += 1
-        self.citation_notifications.update(processed=True)
-        self.save()
-
-    @property
-    def has_responded(self):
-        return self.status in [constants.STATUS_DECLINED, constants.STATUS_REGISTERED]
-
-
-class CitationNotification(models.Model):
-    invitation = models.ForeignKey('invitations.RegistrationInvitation',
-                                   on_delete=models.SET_NULL,
-                                   null=True, blank=True)
-    contributor = models.ForeignKey('scipost.Contributor',
-                                    on_delete=models.CASCADE,
-                                    null=True, blank=True,
-                                    related_name='+')
-
-    # Content
-    submission = models.ForeignKey('submissions.Submission', null=True, blank=True,
-                                   related_name='+')
-    publication = models.ForeignKey('journals.Publication', null=True, blank=True,
-                                    related_name='+')
-    processed = models.BooleanField(default=False)
-
-    # Meta info
-    created_by = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='notifications_created')
-    date_sent = models.DateTimeField(null=True, blank=True)
-    created = models.DateTimeField(auto_now_add=True)
-    modified = models.DateTimeField(auto_now=True)
-
-    objects = CitationNotificationQuerySet.as_manager()
-
-    class Meta:
-        default_related_name = 'citation_notifications'
-        unique_together = (
-            ('invitation', 'submission'),
-            ('invitation', 'publication'),
-            ('contributor', 'submission'),
-            ('contributor', 'publication'),
-        )
-
-    def __str__(self):
-        _str = 'Citation for '
-        if self.invitation:
-            _str += ' Invitation ({} {})'.format(
-                self.invitation.first_name,
-                self.invitation.last_name,
-            )
-        elif self.contributor:
-            _str += ' Contributor ({})'.format(self.contributor)
-
-        _str += ' on '
-        if self.submission:
-            _str += 'Submission ({})'.format(self.submission.arxiv_identifier_w_vn_nr)
-        elif self.publication:
-            _str += 'Publication ({})'.format(self.publication.doi_label)
-        return _str
-
-    def save(self, *args, **kwargs):
-        if not self.submission and not self.publication:
-            raise IntegrityError(('CitationNotification needs to be related to either a '
-                                  'Submission or Publication object.'))
-        return super().save(*args, **kwargs)
-
-    def mail_sent(self):
-        """
-        Update instance fields as if a new citation notification mail has been sent out.
-        """
-        self.processed = True
-        if not self.date_sent:
-            # Don't overwrite by accident...
-            self.date_sent = timezone.now()
-        self.save()
-
-    def related_notifications(self):
-        return CitationNotification.objects.unprocessed().filter(
-            models.Q(contributor=self.contributor) | models.Q(invitation=self.invitation))
-
-    def get_first_related_contributor(self):
-        return self.related_notifications().filter(contributor__isnull=False).first()
-
-    @property
-    def email(self):
-        if self.invitation:
-            return self.invitation.email
-        elif self.contributor:
-            return self.contributor.user.email
-
-    @property
-    def last_name(self):
-        if self.invitation:
-            return self.invitation.last_name
-        elif self.contributor:
-            return self.contributor.user.last_name
-
-    @property
-    def get_title(self):
-        if self.invitation:
-            return self.invitation.get_title_display()
-        elif self.contributor:
-            return self.contributor.get_title_display()
diff --git a/scipost/management/commands/populate_db.py b/scipost/management/commands/populate_db.py
index fff744730218a7164e1eda03096cb7354b454f18..83cf6e9ed7a1f3a355448a5e30a8378b1f498e8d 100644
--- a/scipost/management/commands/populate_db.py
+++ b/scipost/management/commands/populate_db.py
@@ -168,8 +168,7 @@ class Command(BaseCommand):
 
     def create_issues(self):
         IssueFactory.create_batch(5)
-        self.stdout.write(self.style.SUCCESS(
-                          'Successfully created 5 Issue.'))
+        self.stdout.write(self.style.SUCCESS('Successfully created 5 Issue.'))
 
     def create_publications(self):
         PublicationFactory.create_batch(5)