Adds email confirmation code field

bookwyrm/models/site.py

@@ -1,8 +1,6 @@
 """ the particulars for this instance of BookWyrm """
-import base64
 import datetime
 
-from Crypto import Random
 from django.db import models, IntegrityError
 from django.dispatch import receiver
 from django.utils import timezone
@@ -10,7 +8,7 @@ from model_utils import FieldTracker
 
 from bookwyrm.preview_images import generate_site_preview_image_task
 from bookwyrm.settings import DOMAIN, ENABLE_PREVIEW_IMAGES
-from .base_model import BookWyrmModel
+from .base_model import BookWyrmModel, new_access_code
 from .user import User
 
 
@@ -61,11 +59,6 @@ class SiteSettings(models.Model):
             return default_settings
 
 
-def new_access_code():
-    """the identifier for a user invite"""
-    return base64.b32encode(Random.get_random_bytes(5)).decode("ascii")
-
-
 class SiteInvite(models.Model):
     """gives someone access to create an account on the instance"""