Implement payment backends and interaction

Advances #3 (closed)

aleksis/apps/tezor/models/invoice.py

@@ -101,7 +101,7 @@ class Invoice(BasePayment, PureDjangoModel):
         return TotalsTable(values)
 
     def get_success_url(self):
-        return reverse("invoice_by_token", kwargs={"token": self.token})
+        return reverse("invoice_by_token", kwargs={"slug": self.token})
 
     def get_failure_url(self):
-        return reverse("invoice_by_token", kwargs={"token": self.token})
+        return reverse("invoice_by_token", kwargs={"slug": self.token})