do not import pay->auth

Try to keep common things in the "uncloud" module

uncloud/__init__.py

@@ -1,4 +1,11 @@
 from django.utils.translation import gettext_lazy as _
+import decimal
+
+# Define DecimalField properties, used to represent amounts of money.
+AMOUNT_MAX_DIGITS=10
+AMOUNT_DECIMALS=2
+
+decimal.getcontext().prec = AMOUNT_DECIMALS
 
 # http://xml.coverpages.org/country3166.html
 COUNTRIES = (

uncloud_auth/models.py

@@ -2,8 +2,7 @@ from django.contrib.auth.models import AbstractUser
 from django.db import models
 from django.core.validators import MinValueValidator
 
-from uncloud_pay import AMOUNT_DECIMALS, AMOUNT_MAX_DIGITS
-from uncloud_pay.models import get_balance_for_user
+from uncloud import AMOUNT_DECIMALS, AMOUNT_MAX_DIGITS
 
 class User(AbstractUser):
     """
@@ -16,10 +15,3 @@ class User(AbstractUser):
             max_digits=AMOUNT_MAX_DIGITS,
             decimal_places=AMOUNT_DECIMALS,
             validators=[MinValueValidator(0)])
-
-    # @property
-    # def primary_billing_address(self):
-
-    @property
-    def balance(self):
-        return get_balance_for_user(self)

uncloud_pay/__init__.py

@@ -1,8 +1 @@
 
-import decimal
-
-# Define DecimalField properties, used to represent amounts of money.
-AMOUNT_MAX_DIGITS=10
-AMOUNT_DECIMALS=2
-
-decimal.getcontext().prec = AMOUNT_DECIMALS