Merge branch 'fix-migrations' into 'master'

Remove superflous migration

See merge request AlekSIS!182

aleksis/core/migrations/0013_multiple_recipients_announcement.py

-# Generated by Django 3.0.3 on 2020-02-19 18:14
-
-import aleksis.core.models
-from django.db import migrations, models
-import django.db.models.deletion
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('contenttypes', '0002_remove_content_type_name'),
-        ('core', '0012_announcement'),
-    ]
-
-    operations = [
-        migrations.AlterModelOptions(
-            name='announcement',
-            options={'verbose_name': 'Announcement', 'verbose_name_plural': 'Announcements'},
-        ),
-        migrations.RemoveField(
-            model_name='announcement',
-            name='content_type',
-        ),
-        migrations.RemoveField(
-            model_name='announcement',
-            name='recipient_id',
-        ),
-        migrations.AlterField(
-            model_name='announcement',
-            name='description',
-            field=models.TextField(blank=True, max_length=500, verbose_name='Description'),
-        ),
-        migrations.AlterField(
-            model_name='announcement',
-            name='valid_until',
-            field=models.DateTimeField(default=aleksis.core.models.now_tomorrow, verbose_name='Date and time until when to show'),
-        ),
-        migrations.CreateModel(
-            name='AnnouncementRecipient',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('recipient_id', models.PositiveIntegerField()),
-                ('announcement', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='recipients', to='core.Announcement')),
-                ('content_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType')),
-            ],
-        ),
-        migrations.AlterModelOptions(
-            name='announcementrecipient',
-            options={'verbose_name': 'Announcement recipient', 'verbose_name_plural': 'Announcement recipients'},
-        ),
-    ]