add longer fields to custom user

pandora/system/migrations/0003_field_length.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.0.6 on 2020-05-30 10:10
+
+import django.contrib.auth.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('system', '0002_rename_user_table'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='user',
+            name='email',
+            field=models.EmailField(blank=True, max_length=254, verbose_name='email address'),
+        ),
+        migrations.AlterField(
+            model_name='user',
+            name='username',
+            field=models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 255 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=255, unique=True, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username'),
+        ),
+    ]