Added human readable representations of hosting order models to better manage order from the admin interface.

Related ticket:
https://redmine.ungleich.ch/issues/1715

membership/admin.py

@@ -1,3 +1,4 @@
 from django.contrib import admin
+from .models import StripeCustomer
 
-# Register your models here.
+admin.site.register(StripeCustomer)

membership/models.py

@@ -151,6 +151,13 @@ class StripeCustomer(models.Model):
 
             return stripe_customer
 
+    def __str__(self):
+        """
+        str cast with a friendly representation of the ContactMessage object
+        """
+        return "User: %s, Stripe_id: %s" % (self.user, self.stripe_id)
+
+
 
 class CreditCards(models.Model):
     name = models.CharField(max_length=50)